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Every Term Your Growth Team Should Know

1,500 SEO and growth definitions on one crawlable page. Use it before approving a proposal, audit, sales claim, or vendor report when terminology changes budget, scope, measurement, or risk. It defines terms; it does not choose the strategy or replace implementation review.

Use it before buying

Check whether a proposal uses terms like indexation, attribution, canonical, LLM visibility, or conversion rate precisely enough to price and scope the work.

Use it before reporting

Align definitions before dashboards, board updates, or vendor reports turn similar metrics into different claims.

Use it with evidence

Definitions explain vocabulary; they do not prove strategy, guarantee results, or replace source-system review.

Showing 120 of 1,500 definitions in the quick index; use A-Z letters for the complete glossary.

A

A record
A DNS record that maps a domain name to an IPv4 address.
AAAA record
A DNS record that maps a domain name to an IPv6 address.
AARRR
A growth metrics framework covering Acquisition, Activation, Retention, Revenue, and Referral, also known as Pirate Metrics.
Above the fold content
Content visible on screen without scrolling, important for engagement and Largest Contentful Paint optimization.
Accelerated Mobile Pages
An open framework of HTML restrictions and a delivery cache designed to make mobile pages load near-instantly.
Access log
A server-generated record of every HTTP request made to a website, used for crawl analysis and diagnostics.
Acquisition
The marketing function or analytics report category covering how users first arrive at a website or product.
Activation
The point at which a new user takes a meaningful first action that signals initial product value.
Active user
A unique user who has visited a property within a specified period as defined by the analytics platform.
Adaptive design
A web design approach that delivers different fixed layouts based on the detected device or screen size.
Add to home screen
A browser feature that allows a Progressive Web App to be installed as an icon on a user's home screen.
AdsBot Google
Google's crawler used to evaluate the quality and policy compliance of advertising landing pages.
Advanced guide
A long-form, in-depth article aimed at experienced readers and covering a topic at expert level.
Advertorial
Sponsored editorial content presented in the style of a publication, typically requiring sponsored or nofollow link attributes.
AEO
Answer engine optimization, the practice of optimizing for direct-answer surfaces like featured snippets and AI responses.
Affiliate SEO
Search engine optimization for sites earning revenue primarily through affiliate commissions.
AggregateRating schema
A structured data type representing the aggregate rating of an item based on multiple reviews.
Aggregator content
Content that compiles links and summaries from multiple primary sources rather than producing original reporting.
AhrefsBot
The web crawler operated by Ahrefs to build its backlink and keyword databases.
AI citation
A reference or attribution to a source within an AI-generated answer, often shown as a linked footnote.
AI content
Content produced wholly or substantially by generative artificial intelligence systems.
AI engine optimization
The discipline of optimizing brand presence, content, and citations to perform well in generative AI answer engines.
AI Mode
Google's dedicated conversational search interface that returns generative AI responses across multi-turn queries.
AI Overview
A generative summary that appears at the top of certain Google search results, citing the sources it draws from.
AI Overviews citation
A linked source attribution displayed within a Google AI Overview that drives referral visibility.
AI referral
A site visit originating from a click within an AI assistant or AI-generated answer interface.
AI snapshot
An earlier name for the generative summary block in Google search, since replaced in usage by AI Overview.
AI traffic
Visits to a website attributed to AI assistants, AI search interfaces, or generative answer engines.
AI training opt-out
A directive or signal indicating that a site's content should not be used to train AI models.
AI visibility
A measure of how often and how prominently a brand or page appears within AI-generated answers.
AI-generated content
Text, images, or media produced by generative artificial intelligence rather than authored directly by a human.
ai.txt
A proposed text file at a domain root specifying which AI bots may train on or use a site's content.
AIDA model
A classic marketing funnel framework covering Attention, Interest, Desire, and Action stages.
AIO
Common shorthand for AI Overview, Google's generative summary feature in search results.
AIO source
A page cited as a reference within a Google AI Overview.
AJAX crawling scheme
A deprecated Google approach for indexing AJAX-driven content using hashbang URLs and escaped fragments.
Algorithm update
A change to a search engine's ranking algorithm that affects how pages are scored and ordered.
Algorithmic penalty
A loss of rankings caused by an algorithmic ranking change rather than by a manual review action.
All directive
A robots meta or X-Robots-Tag value indicating no restrictions on indexing or following links.
Allow directive
A robots.txt instruction permitting crawling of a path that would otherwise be blocked by a disallow rule.
Alt attribute
The HTML attribute that provides alternative text describing an image for accessibility and image search.
Amazon SEO
Optimization of product listings for ranking and conversion within Amazon's internal search engine.
AMP
Accelerated Mobile Pages, a framework of HTML restrictions and a delivery cache for fast-loading mobile pages.
AMP cache
A content delivery network that serves preloaded AMP pages to users from search and other surfaces.
AMP HTML
A restricted subset of HTML used to author Accelerated Mobile Pages.
Anchor distribution
The breakdown of anchor text types pointing to a page or domain, evaluated for naturalness in link analysis.
Anchor tag
The HTML element a, used to create hyperlinks between resources.
Anchor text
The visible, clickable text of a hyperlink, used by search engines to interpret the linked page's topic.
Anchor text ratio
The proportional breakdown of anchor text types pointing to a page, used to gauge link profile health.
Answer box
A SERP feature that displays a direct answer to a query above the standard organic listings.
Answer engine optimization
Optimizing content and structure to be selected as the answer in featured snippets, voice answers, and AI summaries.
Answer-first writing
A content structure that places a concise direct answer at the top of a page before further detail.
Anthropic-AI bot
A web crawler associated with Anthropic, used for content collection relevant to its AI systems.
AOV
Average order value, the mean revenue generated per transaction.
AP style
The Associated Press writing and style standards, widely used in news and editorial content.
AP Stylebook
The reference manual published by the Associated Press defining its grammar, usage, and citation rules.
Apex domain
The root level of a domain name with no subdomain prefix, also called a naked or bare domain.
APIs-Google
A Google user agent used for fetching content related to its APIs and developer products.
App indexing
The historical practice of making mobile app content discoverable in Google search results.
App shell
The minimal HTML, CSS, and JavaScript required to render the static frame of a Progressive Web App.
App Store Optimization
The discipline of improving an app's visibility and conversion within mobile app store search and browse.
Apple Business Connect
Apple's platform for managing business listings across Apple Maps and related services.
Apple Maps
Apple's mapping service used in iOS and macOS, an important surface for local business discovery.
Applebot
Apple's web crawler, used to power Spotlight, Siri, Safari suggestions, and related services.
Applebot-Extended
An Apple user agent token that signals whether content can be used for AI training, separate from search indexing.
Article schema
A structured data type used to mark up news, blog, or scholarly articles for rich result eligibility.
Article spinning
The black hat practice of automatically rewriting content to produce many near-duplicate articles.
AS
Authority Score, Semrush's domain-level metric estimating overall site authority on a 0 to 100 scale.
ASO
Common abbreviation for App Store Optimization.
Attribution
The methodology used to assign credit for a conversion across the marketing touchpoints that influenced it.
Audience
A grouping of users defined by shared characteristics or behaviors, used in analytics and advertising.
Audience trigger
A condition in GA4 that adds users to a defined audience based on their actions or properties.
August 2023 core update
A broad core ranking update released by Google in August 2023.
August 2024 core update
A broad core ranking update released by Google in August 2024 affecting site quality assessments.
Austin update
A 2004 Google algorithm update that targeted manipulative on-page tactics such as hidden text and meta tag stuffing.
Author entity
The structured representation of a content creator as a recognizable entity in a knowledge graph.
Author entity for AI
A representation of an author designed to be recognized and surfaced by AI answer systems.
Author tag
A meta tag historically used to indicate page authorship, including the deprecated rel author markup.
Authoritativeness
One of the four EEAT factors, referring to the standing of a creator or site within its field.
Authority Score
Semrush's proprietary 0 to 100 metric representing overall domain authority.
Average engagement time
A GA4 metric measuring the average time the website was in focus per user during a session.
Average order value
The mean revenue value of a single completed transaction.
Average position
The mean ranking position of a page across the impressions it received for a given query or query set.
Average session duration
The average length of a user session on a site, traditionally reported by Universal Analytics.
AVIF
An image format derived from AV1 video coding, offering high compression efficiency for web images.

B

B2B SEO
Search engine optimization focused on business-to-business companies and longer, decision-driven buying cycles.
B2C SEO
Search engine optimization focused on consumer-facing brands and shorter, transactional purchase cycles.
Baidu
China's leading search engine, with its own crawler, ranking system, and webmaster tools.
Baidu Webmaster
Baidu's webmaster console for submitting sites and monitoring search performance in China.
Baiduspider
Baidu's primary web crawler.
BBB listing
A business profile on the Better Business Bureau site, often used as a local citation.
Beginner guide
An introductory long-form piece designed for readers new to a topic.
Below the fold
The portion of a page that is not visible until the user scrolls.
BERT
A transformer-based natural language model integrated into Google search to improve query understanding.
Better Business Bureau
A nonprofit organization that rates businesses on trust and provides accreditation, used in local SEO citations.
Big Daddy update
A 2005 to 2006 Google infrastructure overhaul affecting URL canonicalization and crawl behavior.
Bing
Microsoft's general-purpose search engine, the second-largest source of search traffic in many western markets.
Bing Chat
Microsoft's conversational AI search interface, later rebranded as Copilot.
Bing Copilot
Microsoft's generative AI assistant integrated into Bing search and other Microsoft surfaces.
Bing Places
Microsoft's local listing service for managing business information appearing in Bing search and maps.
Bing Webmaster query report
A Bing Webmaster Tools report showing queries, impressions, clicks, and rankings for a site.
Bing Webmaster Tools
Microsoft's free console for monitoring a site's performance, indexing, and crawl health in Bing.
Bingbot
Bing's primary web crawler, used to discover and index content for Bing search.
BingPreview
A Bing user agent used historically to render page previews for the search results.
Black hat SEO
Optimization tactics that violate search engine guidelines and risk penalties or deindexing.
Blockquote
An HTML element used to indicate a longer quotation, typically styled distinctly.
Blogger outreach
The practice of contacting bloggers to obtain coverage, links, or partnerships.
BlogPosting schema
A structured data type for marking up individual blog posts.
BM25
A ranking function from probabilistic information retrieval that scores document relevance to a query.
Body content
The main textual content of a page, distinct from navigation, headers, footers, or sidebars.
Body copy
The primary written content of a page or article, excluding ancillary elements.
Body keyword
A medium-volume keyword falling between head terms and long-tail terms in length and competitiveness.
Body section
The HTML body element containing the visible content of a web page.
Boilerplate content
Reusable text such as legal notices, footers, or repeated marketing copy that appears across many pages.
Book schema
A structured data type used to mark up information about books.
Boston update
An early 2003 Google algorithm update that began the trend of named, public algorithm changes.
Bot
An automated program that browses the web, including search crawlers and other agents.
Bot detection
Techniques used to identify automated traffic distinct from human visitors.
Bounce
A single-page session that ends without further interaction, as defined in classic web analytics.
Bounce rate
The percentage of single-page sessions out of all sessions on a website.
Bourbon update
A 2005 Google update affecting indexing of duplicate content and certain link patterns.
Brand entity
The structured representation of a brand as a recognizable entity in a knowledge graph.
Brand entity for AI
A representation of a brand designed to be recognized and cited by AI answer systems.
Brand mention
Any reference to a brand on the web, whether linked or unlinked.
Brand mention in AI
A reference to a brand within an AI-generated response.
Brand search SERP
The page of search results returned for a brand-name query, often dominated by brand-owned results.
Brand SERP
The first page of search results returned for a branded query.
Brand voice
The consistent personality, tone, and stylistic conventions used in a brand's communications.
Brand-safe AI
AI deployments configured to avoid associating a brand with harmful or off-topic content.
Branded anchor
Anchor text consisting of a brand name, considered a low-risk anchor type.
Branded keyword
A query that includes a specific brand name.
Brandy update
A 2004 Google update introducing greater emphasis on Latent Semantic Indexing and link relevance.
Breakpoint
A defined screen width in CSS at which a layout changes for responsive design.
Brick-and-mortar SEO
Local SEO for businesses that operate from physical storefronts visited by customers.
Broad core update
A wide-ranging change to Google's core ranking algorithms, typically named by month and year.
Brotli compression
A compression algorithm offering better ratios than gzip, used to reduce page weight in transit.
Browser cache
Storage on a user's device used to retain previously fetched resources for faster subsequent loads.
Bundle page
An ecommerce page that groups multiple products together as a single offer.
Business listing
A profile of a business on a directory or platform, used in local SEO.
Button element
The HTML button element used for clickable controls on a page.
Buy on Google
A discontinued Google program that allowed purchases directly within Google's surfaces.
Buyers guide
An informational article that helps prospective buyers compare options before purchase.
Byline
An author attribution typically displayed beneath an article headline.

C

CAC
Customer acquisition cost, the average expense to acquire one paying customer.
Cache header
An HTTP response header that controls how clients and intermediaries cache a resource.
Cache-Control
An HTTP header that defines caching policies for browsers and intermediate caches.
Caching
The practice of storing copies of resources for faster subsequent retrieval.
Caffeine
A 2010 Google indexing infrastructure overhaul that allowed faster, more continuous indexing of new content.
Caffeine infrastructure update
Another name for the 2010 Google infrastructure change that introduced near-real-time indexing.
Calculated metric
A metric defined by combining or transforming existing analytics metrics, available in GA4 properties.
Canonical conflict
A situation where canonical signals point in inconsistent directions across tags, sitemaps, or hreflang.
Canonical signal
Any indicator used by search engines to determine the preferred URL among duplicates.
Canonical syndication
Publishing the same content on a third-party site while keeping the canonical tag pointed to the original.
Canonical tag
An HTML link element specifying the preferred URL for a page when duplicates exist, consolidating ranking signals there.
Canonical URL
The URL designated as the primary version of a page when duplicates or alternates exist.
Canonicalization
The process of consolidating multiple URLs that serve identical or similar content under one preferred URL.
Cart page
An ecommerce page summarizing items a user has added before checkout.
Case study
A long-form content asset detailing a real-world example of a process, project, or result.
Category page
An ecommerce or content page listing items belonging to a single category.
CCBot
The Common Crawl web crawler, whose data is widely used for AI training and research.
ccTLD
Country code top-level domain, a two-letter TLD assigned to a country or territory.
CDN
Content delivery network, a distributed system of servers that delivers web assets from locations near the user.
CF
Citation Flow, Majestic's metric estimating link quantity weighted by authority.
Chamber of Commerce listing
A business profile on a local Chamber of Commerce website, often used as a citation.
Changefreq
A deprecated XML sitemap element historically used to suggest how often a URL changes.
Charset declaration
A meta tag specifying the character encoding used by a web page, typically UTF-8.
ChatGPT referral
A site visit originating from a click within the ChatGPT interface.
ChatGPT-User
An OpenAI user agent token used when ChatGPT browses the web on behalf of a user request.
Checkout page
An ecommerce page where a user enters payment and shipping details to complete a purchase.
Chicago Manual of Style
A widely used American style guide for writing, editing, and citation, particularly in book publishing.
Chrome User Experience Report
A public dataset of real-world Core Web Vitals measurements collected from Chrome users who opt in.
Chromium
The open-source browser project that powers Chrome and is used by Google's Web Rendering Service.
Citation
Either a structured local business mention with NAP details or a reference link supporting a content claim.
Citation building
The process of acquiring local business listings and references to strengthen local SEO.
Citation cleanup
The remediation process of correcting inconsistent or outdated business citations across the web.
Citation Flow
Majestic's metric measuring the volume of links pointing to a URL or domain.
Citation source
A directory, database, or website used to publish or harvest local business citations.
City page
A localized landing page targeting a specific city or municipality for local search visibility.
Class C IP
The historical class of IP addresses sharing the same first three octets, formerly used to assess link diversity.
ClaudeBot
A web crawler associated with Anthropic, used for content discovery related to its AI products.
ClaudeBot block
A robots.txt directive disallowing the ClaudeBot user agent from crawling a site.
Clean URL
A URL that is short, human-readable, and free of session IDs or excessive parameters.
Click
An interaction in which a user activates a hyperlink or interface element.
Click depth
The number of clicks required to reach a page from the homepage or another root location.
Click gap
A historical Bing metric estimating the difference between predicted and observed click counts for a query.
Click loss
A reduction in clicks for a page or query without a corresponding loss in impressions.
Click-through from AI
A click on a citation or link within an AI-generated answer that drives traffic to a source.
Click-through rate
The proportion of impressions that result in clicks for a given query, page, or position.
Click-to-call
A clickable phone number link that initiates a call from the user's device.
Click-worthy headline
A headline crafted to attract clicks while accurately representing the underlying content.
Client-side redirect
A redirect performed in the browser using JavaScript or meta refresh, less reliable than a server-side redirect.
Client-side rendering
A rendering pattern where content is generated by JavaScript in the browser rather than on the server.
Cloudflare Worker
A serverless function running on Cloudflare's edge network, often used for edge SEO transformations.
CLS
Cumulative Layout Shift, a Core Web Vitals metric quantifying unexpected visual shifts during page load.
Cluster content
Supporting articles in a topic cluster that link up to a central pillar page.
Cluster page
A page in a topic cluster covering a specific subtopic in support of a pillar page.
CNAME record
A DNS record that aliases one domain name to another canonical name.
Co-citation
The pattern of two unrelated sites citing the same source, used as a relevance and authority signal.
Co-mention
Multiple mentions of related entities within the same context, signaling topical association.
Co-occurrence
The presence of related terms or entities in proximity within text, used in semantic analysis.
Code block
A formatted section of code on a page, typically marked up using the pre and code HTML elements.
Code splitting
Dividing a JavaScript bundle into smaller files loaded on demand to improve performance.
Cohort analysis
Analytical comparison of grouped users defined by a shared starting characteristic such as acquisition week.
Cold outreach
Initial unsolicited contact, typically by email, used in link building or sales prospecting.
Collection page
An ecommerce page grouping a related set of products into a navigable set.
Color variant
A product option representing a different color of the same underlying SKU family.
Commercial intent
Search intent indicating the user is researching with a view to a future purchase.
Commercial investigation intent
A subtype of commercial intent reflecting comparative evaluation before a purchase decision.
Common Crawl bot
The web crawler operated by Common Crawl, whose archives are widely used in research and AI training.
Common Crawl opt-out
Excluding the CCBot user agent in robots.txt to prevent inclusion in Common Crawl datasets.
Compare
A Search Console interface mode allowing comparison of two date ranges, queries, or filters.
Comparison post
A long-form article comparing two or more products, services, or approaches.
Comparison shopping
Cross-vendor evaluation of products by features and price, often supported by shopping engines.
Conclusion paragraph
The closing paragraph of a piece of content, typically summarizing key points or providing a call to action.
Conditional redirect
A redirect issued only when specific conditions are met, such as user location or device.
Connectively
The successor service to HARO, connecting journalists with expert sources.
Content amplification
Activities that increase reach and visibility of published content beyond organic discovery.
Content audit
A structured inventory and evaluation of an existing content portfolio to inform improvements.
Content breadth
The range of subtopics covered by a piece of content within its broader topic.
Content brief
A specification document guiding writers on intent, structure, keywords, and other requirements for a piece.
Content calendar
A schedule of planned content production and publication, organized by date, channel, or topic.
Content cannibalization
When multiple pages on the same site compete for the same query, splitting performance.
Content cluster
A collection of related pages organized around a central pillar to demonstrate topical coverage.
Content consolidation
Merging multiple weaker pages into a single stronger page, often via redirects.
Content decay
The gradual loss of rankings or traffic by a piece of content as it ages or competition improves.
Content delivery network
A distributed network of edge servers that caches and delivers content from locations close to users.
Content depth
The level of detail and thoroughness with which a piece covers its topic.
Content depth score
A proprietary scoring of a page's depth relative to topic-leading competitors.
Content distribution
The deliberate placement of content across owned, earned, and paid channels.
Content gap
A topic or query the site does not cover that competitors do, representing an opportunity.
Content gap analysis
Comparison of a site's content coverage against competitors to identify missing topics or queries.
Content hub
A page or section of a site that organizes and links to related content on a single topic.
Content length
The number of words or characters in a piece of content.
Content lifecycle
The stages a piece of content moves through from planning to creation, distribution, maintenance, and retirement.
Content marketing
A marketing discipline centered on creating and distributing useful content to attract and retain audiences.
Content matrix
A planning artifact that maps content topics to formats, audiences, or funnel stages.
Content partnership
A collaborative arrangement between organizations to co-produce or syndicate content.
Content pillar
A foundational, comprehensive page on a broad topic, supported by cluster content covering subtopics.
Content pruning
Identifying and removing or consolidating low-value pages to improve overall site quality.
Content quality
The degree to which content meets standards for accuracy, depth, originality, and usefulness.
Content refresh
Updating an existing piece of content to restore or improve its rankings and accuracy.
Content score
A proprietary score grading the optimization or quality of a piece of content.
Content Security Policy
An HTTP header that constrains which resources a page can load to mitigate cross-site attacks.
Content silo
A site structure that groups related content under a common section, with internal links concentrated within it.
Content strategy
The high-level plan for what content a brand will create, why, for whom, and how it will be measured.
Content syndication
Republishing content on third-party sites under defined attribution and canonical handling.
Content uniqueness
The extent to which a piece of content is original rather than duplicative or derivative.
Content update
Any change to an existing page's content, used as a freshness and quality signal.
Content velocity
The rate at which a site or team produces and publishes new content.
Conversational query
A search query phrased in natural, conversational language, common in voice and AI search.
Conversion
A user action of value to the business, such as a purchase, signup, or lead submission.
Conversion event
A GA4 event marked as a conversion for reporting and audience purposes.
Conversion modeling
Statistical estimation of conversions that cannot be directly observed due to consent or tracking gaps.
Conversion rate
The percentage of sessions or users that complete a defined conversion action.
Conversion rate optimization
The discipline of testing and improving on-site experiences to increase conversion rate.
Core algorithm update
A foundational change to a search engine's main ranking systems, affecting many sites and queries.
Core update
Common shorthand for a Google broad core ranking update.
Core Web Vitals
Google's set of user experience metrics covering loading, interactivity, and visual stability.
Core Web Vitals report
A Search Console report grouping URLs by their Core Web Vitals status across mobile and desktop.
Cornerstone content
Foundational pages on a site that anchor a topic and are central to internal linking.
Cost per acquisition
The average advertising cost incurred for one acquired customer or conversion.
Cost per click
The amount paid each time a user clicks a paid search advertisement.
Cost per mille
The advertising cost per thousand impressions.
Country code top-level domain
A two-letter top-level domain assigned to a specific country or territory.
Country report
A Search Console performance report breakdown by user country.
Country targeting
Indicating the country a site or section is intended for, configured in Search Console or via signals.
Course schema
A structured data type describing an educational course.
Coverage area
The geographic area a service area business serves.
Coverage report
A historical Search Console report showing index status, replaced by the page indexing report.
CPA
Cost per acquisition, the average advertising cost per acquired customer or conversion.
CPC
Cost per click, the advertising cost paid per click.
CPM
Cost per mille, the advertising cost per thousand impressions.
Crawl anomaly
A Search Console label indicating an unexplained crawl error returned for a URL.
Crawl budget
The set of resources a search engine is willing to allocate to crawling a site over a given period.
Crawl capacity
The maximum crawl rate a site's infrastructure can sustain without performance degradation.
Crawl demand
The level of interest a search engine has in crawling a site's URLs based on freshness and importance.
Crawl depth
The number of levels deep into a site that a crawler reaches from the start URL.
Crawl efficiency
The proportion of crawler requests that result in indexable, useful URLs being fetched.
Crawl error
A failure encountered by a search engine crawler when attempting to fetch a URL.
Crawl frequency
How often a crawler revisits a given URL or site.
Crawl log
A record of crawler activity on a site, derived from server logs.
Crawl opt-out
A directive declining to allow a particular crawler, typically used for AI training crawlers.
Crawl path
The sequence of internal links a crawler follows from one URL to another.
Crawl prioritization
The mechanism by which a crawler decides which URLs to fetch next given its budget.
Crawl rate
The number of requests per second a crawler makes against a server.
Crawl rate limit
An upper bound on crawl rate set by Google or by a server's response performance.
Crawl stats report
A Search Console report providing information on Googlebot's crawl behavior on a site.
Crawl trap
A site condition that causes crawlers to fetch unbounded or duplicate URLs, wasting crawl budget.
Crawl-delay directive
A robots.txt instruction asking a crawler to wait a given number of seconds between requests, observed by some engines.
Crawlability
The extent to which a search engine crawler can access and traverse a site's URLs.
Crawler
An automated program that systematically browses the web to discover and fetch content.
Crawling
The process of automated programs discovering and fetching URLs across the web.
Critical CSS
The minimal subset of CSS required to render above-the-fold content, often inlined to speed up first render.
CRO
Conversion rate optimization, the discipline of testing and improving on-site experiences to increase conversion.
Cross-domain canonical
A canonical tag that points from a page on one domain to a preferred URL on a different domain.
CrUX
Chrome User Experience Report, a public dataset of Core Web Vitals from real Chrome users.
CSP
Content Security Policy, an HTTP header that constrains which resources a page can load to mitigate attacks.
CSR
Client-side rendering, where JavaScript in the browser produces page content rather than the server.
CSS
Cascading Style Sheets, the language used to describe the presentation of HTML documents.
CTR
Click-through rate, the proportion of impressions that result in clicks.
Cumulative Layout Shift
A Core Web Vitals metric measuring the total unexpected layout shift that occurs during page load.
Curated content
Content compiled, organized, and contextualized from third-party sources by an editor.
Currency localization
Adapting prices and currency symbols to match each target locale.
Custom channel
A user-defined acquisition channel grouping in GA4 beyond the default channel set.
Custom dimension
A user-defined dimension in analytics that captures additional categorical data.
Custom metric
A user-defined metric in analytics that captures additional quantitative data.
Custom segment
A user-defined audience segment used to filter analytics data.
Customer acquisition cost
The total marketing and sales cost to acquire one paying customer.
Customer review schema
Structured data marking up individual customer reviews of a product or service.
CVR
Conversion rate, the proportion of users who complete a defined conversion.
CWV
Common abbreviation for Core Web Vitals.

D

DA
Domain Authority, Moz's 0 to 100 metric estimating a domain's ability to rank in search.
Data stream
In GA4, the source of data for a property, configured per website or app.
DataLayer
A JavaScript object used by tag management systems to expose page-level data to tags.
DataLayer push
A method for adding event or variable data into the dataLayer for tag manager processing.
Dataset schema
A structured data type used to mark up datasets for inclusion in dataset search.
Date format localization
Adapting date displays to match each locale's conventions.
Date stamp
A visible date on content indicating publish or last-modified date, used as a freshness signal.
Dead-end page
A page with no internal outbound links, leaving users and crawlers without further paths.
December 2020 core update
A broad core ranking update released by Google in December 2020.
December 2024 spam update
A Google spam update released in December 2024 targeting manipulative content patterns.
Deceptive content warning
A browser or Search Console warning that a site is hosting content intended to deceive users.
Decorative image
An image used purely for visual styling, typically given an empty alt attribute.
Dedicated hosting
A hosting arrangement where a server is reserved exclusively for one customer.
Dedicated IP
An IP address assigned exclusively to one site or customer.
Deep site architecture
A site structure where pages sit many clicks below the homepage.
Default channel grouping
GA4's predefined classification of traffic sources into channels like Organic Search and Direct.
Definition snippet
A featured snippet that returns a definition for a queried term.
Definitive guide
A long-form article positioned as the most thorough resource on its topic.
Demand curve
A representation of how search demand is distributed across a topic's queries.
Desktop rendering
Rendering optimized for or evaluated against desktop user agents and viewports.
Device report
A Search Console performance breakdown by device type.
Digital PR
Public relations work executed online, typically aimed at earning links and brand mentions.
Dimension
A categorical attribute in analytics, such as page path or country, used to segment data.
Direct answer
A SERP element delivering a concise direct answer to a query, typically without requiring a click.
Direct traffic
Visits with no identifiable referrer, traditionally attributed to typed URLs or bookmarks.
Disallow directive
A robots.txt instruction preventing specified crawlers from requesting URLs that match a path.
Disavow file
A text file submitted to Google listing inbound links a site wants ignored when assessing its profile.
Disavow tool
A Google Search Console tool for submitting a disavow file to discount unwanted backlinks.
Discontinued product page
An ecommerce page for a product no longer sold, requiring careful indexing and redirect decisions.
DiscordBot
Discord's link preview bot used when URLs are shared in Discord channels.
Discover report
A Search Console report showing performance in Google Discover.
Discoverability
The extent to which content can be found by users and crawlers through links, sitemaps, and search.
Discussion forums and Reddit pack
A Google SERP feature surfacing relevant discussion threads from forums such as Reddit.
DNS
Domain Name System, the protocol that maps human-readable domain names to IP addresses.
DNS propagation
The period during which DNS changes propagate across the internet's resolvers.
DNS record
An entry in DNS describing how a domain or subdomain should resolve.
DNS-prefetch
A resource hint instructing the browser to resolve a domain's DNS in advance.
Doctype
A declaration at the top of an HTML document specifying the document type and version.
Document Object Model
The structured tree representation of an HTML document used by browsers and scripts.
DOM
Common abbreviation for Document Object Model.
Domain age
The length of time a domain has been registered, sometimes considered as a minor trust signal.
Domain Authority
Moz's proprietary 0 to 100 metric estimating a domain's ranking ability.
Domain history
The historical ownership, content, and link profile of a domain prior to current use.
Domain migration
Moving a website from one domain to another while preserving SEO equity.
Domain Rating
Ahrefs' 0 to 100 metric measuring the strength of a domain's backlink profile.
Domain registrar
A company that registers and manages domain names on behalf of customers.
Donor domain
A domain providing a backlink to another domain.
DotBot
Moz's web crawler used to build its link index.
DR
Common abbreviation for Domain Rating.
Driving direction
Navigational route information shown for local businesses, often surfaced in map packs.
DuckDuckBot
DuckDuckGo's web crawler.
DuckDuckGo
A privacy-focused general search engine that aggregates results from multiple sources.
Duplicate content
Content that is identical or substantially similar to content elsewhere on the web or within a site.
Dwell time
The time a user spends on a page after clicking from the SERP before returning.
Dynamic rendering
Serving prerendered HTML to bots while serving JavaScript-rendered pages to users, formerly recommended by Google.
Dynamic URL
A URL containing parameters that drive content generation server-side, contrasted with static URLs.

E

Eager loading
Loading resources immediately rather than deferring them until needed.
EAT update
Informal label for Google updates that increased the weight of expertise, authoritativeness, and trustworthiness.
Ebook
A long-form digital document, often used as a lead magnet in content marketing.
Ecommerce SEO
Search engine optimization specific to online stores, covering product, category, and faceted page concerns.
Edge SEO
SEO modifications applied at the CDN or edge layer rather than within the origin site code.
Edge server
A server in a CDN deployed close to end users to reduce latency.
Edge worker
A serverless function running on a CDN's edge network, often used for edge SEO.
Editorial calendar
A schedule of planned editorial content with publish dates, owners, and topics.
Editorial standards
The internal rules a publication uses to ensure consistency, accuracy, and quality.
EEAT
Google's expanded EAT framework adding Experience to Expertise, Authoritativeness, and Trustworthiness.
EEAT update
Informal label for Google updates that increased the weight of EEAT signals.
Email outreach
Outreach conducted by email to prospects, partners, or publishers.
Email traffic
Visits attributed to clicks from email campaigns.
Embedded element
An external resource embedded into a page using elements such as iframe or embed.
Embedded tweet
A specific tweet rendered inline on a page using Twitter's embed code.
Embedded video
A video player embedded in a page from an internal or external host.
Embedding
A vector representation of text, image, or other content used in machine learning and retrieval.
Embedding model
A model that produces embeddings for content, used in semantic search and AI retrieval.
Empty anchor
A hyperlink whose visible text is missing or only contains whitespace.
Engaged session
A GA4 session that lasted at least ten seconds, had a conversion, or included two or more page views.
Engagement rate
The proportion of sessions classified as engaged in GA4.
Engagement time
Time during which the page or app was in focus, used as a positive engagement signal in GA4.
Enterprise SEO
SEO at scale for large organizations, with the operational complexity that scale entails.
Entity
A distinct, identifiable thing such as a person, place, product, or concept recognized in a knowledge graph.
Entity optimization
Optimizing content and markup so that search systems recognize and associate it with the right entities.
Entity recognition
The identification of named entities within text, used in semantic search and analytics.
Entity salience
The importance of an entity within a piece of content relative to other entities.
Entity SEO
An approach to SEO emphasizing entity recognition, knowledge graph relationships, and topical authority.
ETag
An HTTP header value identifying a specific version of a resource for cache validation.
Ethical SEO
Optimization within search engine guidelines and user-centered standards, equivalent to white hat SEO.
Etsy SEO
Optimization of listings within Etsy's internal search engine.
Event
In GA4, a discrete user interaction recorded with optional parameters.
Event parameter
Additional data attached to a GA4 event to give context, such as item id or value.
Event rich result
A SERP rich result displaying event details such as date, location, and price.
Event schema
Structured data marking up an event with date, location, and other details.
Event tracking
The practice of capturing user interactions as events for analytics reporting.
Evergreen content
Content that remains relevant and useful over a long period without major revision.
Evergreen keyword
A query whose search volume remains stable across seasons and years.
Exact match anchor
Anchor text that precisely matches the target page's primary keyword.
Exit page
The last page viewed in a user session.
Exit rate
The percentage of sessions ending on a given page out of all sessions that included it.
Experience
The first E in EEAT, referring to first-hand experience with the subject of a page.
Expertise
One of the EEAT factors, referring to the demonstrated knowledge of a creator or site on the page topic.
Expired domain abuse
Acquiring an expired domain with prior authority and repurposing it for unrelated content to manipulate rankings.
Expires header
An HTTP header specifying a time after which a cached resource is considered stale.

F

Facebook External Hit
Facebook's bot that fetches pages to generate previews when URLs are shared.
Facebook Places
Facebook's local listings feature where users and businesses interact with location data.
Faceted crawl trap
A crawl trap caused by faceted navigation generating many parameterized URLs.
Faceted navigation
An on-site filtering interface allowing users to narrow listings by attributes such as size or color.
Faceted navigation SEO
Techniques for managing the indexing implications of faceted navigation, including parameter handling and canonicalization.
Fake bot
A program impersonating a legitimate crawler's user agent to scrape or attack a site.
FAQ optimization
Structuring frequently asked questions for snippet eligibility and clarity.
FAQ page
A standalone page consolidating frequently asked questions and their answers.
FAQ rich result
A SERP rich result that previously displayed FAQ questions and answers, now restricted by Google.
FAQ schema
Structured data marking up frequently asked questions and answers on a page.
FAQ section
A block of frequently asked questions on a page, often paired with FAQ schema.
FCP
First Contentful Paint, a metric measuring when the first text or image is rendered on a page.
FID
First Input Delay, a former Core Web Vitals metric measuring delay between first user interaction and browser response.
Field data
Real-world performance data collected from actual users in the field, contrasted with lab data.
Filter
An analytics or Search Console mechanism narrowing data to a subset matching given criteria.
Filter page
A page generated by applying filters to a category, often parameterized.
Filter URL
A URL representing a filtered view of a listing, typically containing query parameters.
First Contentful Paint
A page load metric measuring time until the first content is rendered.
First Input Delay
A former Core Web Vitals metric capturing delay between user input and browser response, replaced by INP.
First paragraph
The opening paragraph of a piece of content, important for snippet selection and reader retention.
First-touch attribution
An attribution model assigning full credit for a conversion to the first marketing touchpoint.
Flat site architecture
A site structure where most pages sit only a few clicks from the homepage.
Flesch-Kincaid score
A readability metric estimating the U.S. grade level required to understand a text.
Flexible image
An image whose size adapts to its containing element, typically through responsive CSS.
Florida 2 update
A 2019 Google update perceived as a continuation of the Florida-style algorithm changes.
Florida update
A November 2003 Google update that significantly affected commercial queries and SEO tactics.
Fluid layout
A layout that scales proportionally with the viewport rather than using fixed widths.
Focus keyword
The primary keyword a page is intentionally optimized to rank for.
Follow-up query
A query in a multi-turn search session that builds on a previous query.
Form element
The HTML form element used to collect user input.
Forum content prioritization
Google's increased weighting of authoritative forum and community discussion content.
Foundational content
Cornerstone pages that anchor a topic and serve as primary internal link targets.
Fragment identifier
The portion of a URL after a hash sign, identifying a section within a document.
Fred
An informal name given to a 2017 Google update perceived to target low-quality, ad-heavy content.
Free product listings
Unpaid product placements within Google Shopping and related surfaces.
Fresh query
A query for which freshness is heavily weighted by the ranking algorithm.
Friendly URL
A clean, human-readable URL using descriptive words rather than parameters or IDs.
Funnel
A sequence of stages a user moves through toward conversion.
Funnel analysis
Analytical examination of how users progress through and drop off from a defined funnel.

G

GA
Common abbreviation for Google Analytics.
GA4
Google Analytics 4, the event-based analytics platform replacing Universal Analytics.
GA4 property
A container in GA4 holding configuration and data for a website or app.
GBP
Common abbreviation for Google Business Profile.
GBP attribute
A self-reported attribute of a business in Google Business Profile, such as wheelchair accessibility.
GBP insights
Performance reporting within Google Business Profile covering searches, views, and actions.
GBP messaging
A Google Business Profile feature allowing customers to message a business directly.
GBP photo
A photo uploaded to a Google Business Profile.
GBP post
A short timely update published on a Google Business Profile.
GBP product
A product entry within a Google Business Profile.
GBP Q&A
A question-and-answer feature within Google Business Profile where users can ask questions about a business.
GBP review
A customer review of a business posted on its Google Business Profile.
GBP service
A service offering listed within a Google Business Profile.
Generative answer
An answer composed by a large language model rather than retrieved verbatim from a single source.
Generative engine optimization
The discipline of improving brand visibility within generative AI answer engines.
Generic anchor
Anchor text using non-descriptive phrases such as 'click here' or 'this page.'
Generic top-level domain
A top-level domain that is not country-specific, such as .com or .org.
GEO
Generative engine optimization, the discipline of optimizing for generative AI answer engines.
Geo-coordinate
A latitude and longitude pair specifying a location.
Geo-modifier
A geographic word or phrase added to a query to indicate location intent.
Geo-redirect
A redirect that sends users to different URLs based on their detected geographic location.
Geographic targeting
The practice of focusing SEO and content on specific geographic markets.
Geotagged image
An image whose metadata or markup encodes a geographic location.
Geotargeting
Specifying the geographic audience a site or page is intended to serve.
Glossary post
A long page defining many terms in a topic area, often used as a topical authority asset.
Glue
A Google internal system reportedly used to assemble the final SERP from rankings and features.
GMB
Google My Business, the former name for Google Business Profile.
Goal
A defined conversion action in classic Google Analytics, replaced by conversion events in GA4.
Goal completion
A recorded instance of a goal being met in classic Google Analytics.
Google algorithm
The collection of systems Google uses to rank web search results.
Google Analytics
Google's web analytics platform for measuring website and app traffic and behavior.
Google Business Profile
Google's platform for businesses to manage their listing across Google Search and Maps.
Google Gemini
Google's family of generative AI models powering Gemini and AI Overview features.
Google index
Google's database of crawled and indexed web pages eligible to appear in search results.
Google Knowledge Graph
Google's structured database of entities and their relationships used to enrich search.
Google Map embed
An embedded interactive map on a page using Google Maps APIs.
Google Maps
Google's mapping product, an important surface for local search.
Google Merchant Center
Google's platform for managing product feeds used in Google Shopping and related surfaces.
Google My Business
The former name for Google Business Profile.
Google Posts
Short timely updates published by businesses through Google Business Profile.
Google review
A customer review left on a Google Business Profile.
Google Search Console
Google's free webmaster tool for monitoring a site's presence in search, including indexing, queries, and issues.
Google Shopping
Google's product comparison and purchasing surface integrated into Search.
Google Tag Manager
A Google product for deploying and managing tracking and marketing tags through a single container.
Googlebot
Google's primary web crawler, with desktop and smartphone variants.
Googlebot Desktop
The desktop user agent variant of Googlebot.
Googlebot Image
Googlebot's variant for crawling and indexing images.
Googlebot News
Googlebot's variant focused on indexing news content.
Googlebot Smartphone
The mobile user agent variant of Googlebot, primary for mobile-first indexing.
Googlebot Video
Googlebot's variant for crawling and indexing video content.
GPTBot
OpenAI's crawler used to gather training data for its models.
GPTBot block
A robots.txt rule disallowing the GPTBot user agent from crawling a site.
Gray hat SEO
Optimization tactics that fall between clearly compliant and clearly prohibited.
Grounded answer
An AI-generated answer attributed to specific retrieved sources rather than the model's parametric memory.
Grounding
The practice of constraining a generative model's output to retrieved source information.
GSC
Common abbreviation for Google Search Console.
gTLD
A generic top-level domain, such as .com, .org, or .net.
GTM
Common abbreviation for Google Tag Manager.
GTmetrix
A web performance testing tool offering speed audits and recommendations.
Guest author
A writer contributing content to a publication outside their primary platform.
Guest blogging
Writing posts published on third-party blogs, often as a link building tactic.
Guest post
An article written by an outside contributor and published on a third-party site.
Gzip compression
A widely supported compression algorithm reducing the transfer size of text-based assets.

H

H1 tag
An HTML heading tag designating the primary heading of a page or section.
H2 tag
An HTML heading tag for second-level headings within a page hierarchy.
H3 tag
An HTML heading tag for third-level headings within a page hierarchy.
H4 tag
An HTML heading tag for fourth-level headings within a page hierarchy.
H5 tag
An HTML heading tag for fifth-level headings within a page hierarchy.
H6 tag
An HTML heading tag for sixth-level headings, the deepest heading level.
Hacked content
Content placed on a site without the owner's permission as a result of a security compromise.
Hacked site recovery
The remediation process to clean a hacked site and restore its standing in search.
Hallucination
An AI-generated statement that is plausible but factually incorrect or unsupported by source material.
Hard 404
A standard 404 response indicating the requested URL does not exist on the server.
HARO
Help a Reporter Out, a former platform connecting journalists with expert sources, succeeded by Connectively.
Hash URL
A URL containing a fragment after a hash sign, traditionally not sent to the server.
Hashbang URL
A URL using a hash followed by an exclamation mark, used in deprecated AJAX crawling schemes.
Hawk
An informal name for a 2017 minor adjustment to Google's Possum local algorithm.
HCU
Common abbreviation for Helpful Content Update.
Head keyword
A short, high-volume query at the head of the search demand curve.
Head section
The HTML head element containing metadata, links, and scripts not displayed inline.
Head term
Another name for a head keyword, a short broad query with high search volume.
Header tag
Another name for an HTML heading tag.
Heading hierarchy
The structured order of heading tags from H1 through H6 on a page.
Heading tag
An HTML element from H1 through H6 used to structure document headings.
Headless browser
A browser that runs without a graphical interface, used to render pages programmatically.
Headline formula
A reusable structural template for writing headlines, often based on tested patterns.
Help a Reporter Out
The former name for HARO, the journalist-source matching platform.
Helpful content
Content that meaningfully meets user needs, as defined by Google's helpful content guidelines.
Helpful Content System
A Google ranking system reducing the visibility of unhelpful, search-engine-first content.
Helpful Content Update
A Google update introducing the helpful content system, since folded into core ranking.
Hero image
The large lead image at the top of a page, typically the LCP element.
Hidden gems update
A Google update aimed at surfacing high-quality content from forums and lesser-known sites.
Hosting
The service that stores a website's files and serves them to visitors.
Hotel schema
A schema.org type representing a hotel and its key attributes.
How-to article
An article structured to teach a reader to accomplish a task.
How-to optimization
Structuring how-to content for clarity and snippet eligibility.
How-to rich result
A SERP rich result displaying ordered steps from how-to structured data, now restricted by Google.
HowTo schema
Structured data marking up step-by-step instructions for completing a task.
Hreflang
An HTML and HTTP attribute indicating the language and regional targeting of a page's alternate versions.
Hreflang attribute
Another name for the hreflang annotation specifying language and region targeting.
Hreflang conflict
A condition where hreflang annotations contradict each other or other targeting signals.
Hreflang error
A reported issue with a site's hreflang implementation, such as a missing return tag.
Hreflang for ecommerce
Implementation of hreflang on multilingual or multinational ecommerce sites.
Hreflang return tag
An hreflang annotation on a target page that points back to the originating alternate.
Hreflang tag
An HTML link tag specifying language and regional targeting for an alternate URL.
HSTS
HTTP Strict Transport Security, a header instructing browsers to only access a site over HTTPS.
HTML attribute
A name-value pair on an HTML element that modifies its behavior or metadata.
HTML element
A unit of HTML defined by tags, with optional attributes and content.
HTML sitemap
A user-facing page that lists site URLs for navigation and discovery.
HTML5
The fifth major revision of HTML, including semantic elements and modern multimedia support.
HTTP
HyperText Transfer Protocol, the application protocol used for web communication.
HTTP request
A message from a client to a server requesting a resource.
HTTP response
A message from a server to a client returning a resource or status.
HTTP status code
A three-digit code in an HTTP response indicating the outcome of a request.
HTTP/2
A major revision of HTTP introducing multiplexing, header compression, and server push.
HTTP/3
A revision of HTTP built on QUIC, providing improved performance over unreliable networks.
HTTPS
HTTP transmitted over TLS, providing encrypted communication between client and server.
HTTPS migration
The process of moving a site from HTTP to HTTPS while preserving SEO equity.
Hub and spoke model
A topical strategy with a central pillar page linked to many supporting cluster pages.
Hub page
A page that aggregates and links to related content on a topic.
Human translation
Translation produced by a human translator, contrasted with machine translation.
Hummingbird
A 2013 Google overhaul of its core ranking algorithm focused on conversational query understanding.
Hydration
The process of attaching JavaScript behavior to server-rendered HTML in the browser.
Hyperlocal SEO
Local SEO targeted at a very small geographic area such as a single neighborhood.

I

IDN
Common abbreviation for Internationalized Domain Name.
Iframe
An HTML element that embeds another document within the current page.
Image alt text
Alternative text describing an image for accessibility and image search.
Image anchor
A hyperlink whose visible content is an image rather than text.
Image caption
Visible text accompanying an image, often used to provide context.
Image dimensions
The pixel width and height of an image.
Image file name
The filename of an image, used as a minor relevance signal in image search.
Image format
The encoding of an image file, such as JPEG, PNG, WebP, or AVIF.
Image pack
A SERP feature presenting a row or grid of images relevant to the query.
Image SEO
Optimization of images for relevance, performance, and accessibility.
Image sitemap
A sitemap or sitemap extension that exposes image URLs to crawlers.
Image tag
The HTML img element used to display an image.
Image title attribute
The deprecated HTML title attribute on an image, formerly shown as a tooltip.
ImageObject schema
A schema.org type used to mark up image resources.
Impression
A single instance of a page or result being shown to a user in search results.
Impression growth
The increase in impressions for a page or query over a period.
Incremental static regeneration
A Next.js rendering pattern that regenerates static pages on demand after deployment.
Index
The collection of pages a search engine has stored and made eligible for retrieval.
Index coverage report
A historical Search Console report showing index status, replaced by the page indexing report.
Indexability
The extent to which URLs on a site are eligible to be added to a search engine's index.
Indexifembedded directive
A robots meta value allowing indexing only when the page is embedded in another indexable document.
Indexing
The process of storing fetched pages in a search engine's index for later retrieval.
Infinite scroll
A pattern that loads new content as the user scrolls down, requiring care for crawlability.
Infinite URL space
A site condition that generates endless unique URLs, typically caused by parameters or filters.
Information architecture
The structural design of a site's content for findability and usability.
Informational intent
Search intent in which the user is looking for information rather than a transaction.
Inline code
Short code rendered inline using the HTML code element.
Inline image
An image rendered within the body of a page rather than as a hero or banner.
INP
Interaction to Next Paint, the Core Web Vitals metric measuring responsiveness across a visit.
Input element
The HTML input element used to capture user input within a form.
Interaction to Next Paint
The Core Web Vitals metric measuring responsiveness across the duration of a user's visit.
Internal linking
The practice of placing links between pages on the same site to support navigation and ranking flow.
Internal PageRank
An estimation of PageRank flowing through a site's internal link graph alone.
International SEO
SEO across multiple countries, languages, or regions, including hreflang and geo configuration.
International site structure
The architecture of a multinational site, typically using subfolders, subdomains, or ccTLDs.
International targeting report
Another name for the Search Console international targeting interface.
Internationalized domain name
A domain name that contains non-ASCII characters, encoded via Punycode in DNS.
Intersection Observer
A web API for efficiently observing when elements enter or leave the viewport.
Introduction paragraph
The first paragraph of a piece of content, used to establish topic and intent.
Intrusive interstitial
A pop-up or overlay that obstructs main content, treated as a negative page experience signal.
Inventory feed
A structured data feed of product inventory provided to commerce platforms.
Inverted pyramid
A writing structure leading with the most important information and decreasing in priority.
IP address
A numeric identifier assigned to a device on a network.
IP geotargeting
Inferring user location from IP address and serving location-specific content or pages.
IP-based redirect
A redirect that sends users to different URLs based on the user's detected IP location.
ISO 3166-1
An international standard defining country codes used in hreflang and other contexts.
ISO 639-1
An international standard defining two-letter language codes used in hreflang and other contexts.
Isomorphic rendering
A rendering pattern where the same JavaScript runs on both server and client.
ISR
Incremental Static Regeneration, a Next.js rendering pattern that regenerates static pages on demand.
ItemList schema
Schema.org type for a list of items, used in carousel and listing rich results.

J

Jagger update
A multi-phase 2005 Google update affecting links, anchor text, and duplicate content evaluation.
JavaScript
A programming language used for client-side and server-side web development.
JavaScript redirect
A redirect implemented through client-side JavaScript, less reliable than server-side redirects.
JavaScript SEO
The practice of ensuring JavaScript-driven content is crawlable, renderable, and indexable.
Job posting rich result
A SERP rich result displaying job listings from JobPosting structured data.
JobPosting schema
Structured data marking up job listings for inclusion in Google for Jobs.
JPEG XL
An image format successor to JPEG offering improved compression and quality, with limited browser support.
JS rendering
The execution of JavaScript by a search engine to render and index dynamic content.
JSON-LD
A JSON-based format for embedding structured data in HTML pages, the recommended schema syntax.
July 2021 core update
A broad core ranking update released by Google in July 2021.
June 2021 core update
A broad core ranking update released by Google in June 2021.

K

Kagi
A paid, ad-free general search engine focused on privacy and result quality.
Keyword
A word or phrase entered into a search engine to retrieve information.
Keyword cannibalization
The condition in which multiple pages on the same site compete for the same query.
Keyword clustering
The grouping of keywords by intent or topic to inform content planning.
Keyword density
The proportion of a page's text consisting of a target keyword, no longer treated as a strong ranking factor.
Keyword difficulty
A score estimating how hard it is to rank for a given keyword.
Keyword gap
A keyword competitors rank for that the target site does not, representing an opportunity.
Keyword mapping
The assignment of target keywords to specific URLs across a site.
Keyword opportunity
A keyword identified as feasible to pursue based on volume, intent, and competition.
Keyword research
The discipline of identifying which keywords a site should target and why.
Keyword stuffing
Repetitive use of a keyword in content with intent to manipulate rankings, against search guidelines.
Keyword volume
The estimated number of monthly searches for a keyword.
Knowledge card
A SERP element presenting a concise summary of an entity, similar to a knowledge panel.
Knowledge cutoff
The latest date in a language model's training data, beyond which it has no native knowledge.
Knowledge graph
A structured database of entities and their relationships used to power semantic search.
Knowledge graph card
A SERP feature surfacing knowledge graph data for an entity.
Knowledge panel
A SERP feature displaying entity information sourced from the Knowledge Graph.

L

Lab data
Performance data collected in a controlled testing environment, contrasted with field data.
Landing page
A standalone page designed to receive traffic from a campaign or specific query.
Lang attribute
The HTML lang attribute specifying the language of the document or element.
Language code
A short code identifying a language, typically using ISO 639-1.
Language targeting
Specifying the intended language audience for a site or page.
Language version
A localized variant of a page or site for a specific language.
Language-based redirect
A redirect that sends users to a different URL based on the browser's accepted language.
Large language model
A neural network trained on vast amounts of text and capable of generating human-like language.
Largest Contentful Paint
The Core Web Vitals metric measuring time to render the largest content element in the viewport.
Last click
An attribution model giving full credit to the most recent touchpoint before conversion.
Last updated date
A visible or marked-up date indicating when a piece of content was last revised.
Last-Modified header
An HTTP header indicating when a resource was last modified, used for cache validation.
Last-touch attribution
Another name for last-click attribution, assigning full credit to the final touchpoint.
Lastmod
An XML sitemap element indicating the last modification date of a URL.
Latent semantic indexing
A historical document analysis technique sometimes loosely cited in SEO discussions.
Latitude longitude
The pair of geographic coordinates identifying a precise location.
Layout shift
Visual movement of page content during load, contributing to Cumulative Layout Shift.
Lazy loading
A technique that defers loading of off-screen resources until needed.
LCP
Largest Contentful Paint, the Core Web Vitals metric for loading performance.
Lead
A prospective customer who has expressed interest, typically by submitting a form.
Lead generation
Marketing activity focused on identifying and capturing prospective customer interest.
Lead magnet
A piece of content offered in exchange for contact details, used to generate leads.
Lead magnet content
Content designed primarily as a gated lead magnet asset.
Lifetime value
The total revenue expected from a customer relationship over its duration.
Lighthouse
Google's open-source automated tool for auditing performance, accessibility, and SEO.
Lighthouse score
A Lighthouse-generated score from 0 to 100 across categories such as performance and SEO.
Linkable asset
A piece of content sufficiently valuable that it naturally attracts backlinks.
Linked mention
A brand mention that includes a hyperlink to the brand's site.
LinkedInBot
LinkedIn's bot for fetching previews when URLs are shared on the platform.
Linking IP diversity
The number of distinct IPs from which a site has inbound links.
Linking page
A specific page that contains a backlink to another page.
Linking root domain
A unique root domain that points one or more backlinks to a target site.
List snippet
A featured snippet that returns a bulleted or numbered list extracted from a page.
Listicle
A content format structured as a numbered or bulleted list of items.
LLM
Large language model, a class of AI models trained on text used in generative search.
LLM optimization
Optimizing content and authority signals to be referenced and cited by large language models.
LLM SEO
An informal label for LLMO and related practices.
LLM-generated content
Content produced by a large language model.
LLMO
Large language model optimization, optimizing for visibility and accurate representation in LLM responses.
Llms-full.txt
A proposed extended version of llms.txt providing more detailed AI usage rules.
Llms.txt
A proposed plain text file at a domain root specifying how the site's content may be used by AI systems.
Local 3-pack
Another name for the local pack, the block of three local results above a map on a SERP.
Local citation
A reference to a business's name, address, or phone number on a third-party site.
Local finder
The expanded local results page accessed by clicking through from the local pack.
Local intent
Search intent in which the user is looking for businesses or information tied to a location.
Local intent SERP
A search results page where local intent is detected, typically including a local pack.
Local Justifications
Snippets from review or website content surfaced under a local listing as supporting evidence.
Local landing page
A localized landing page targeting a specific geography or service area.
Local listing
A business listing on a local directory, map, or platform.
Local pack
The block of three local listings displayed alongside a map in local search results.
Local pack ranking
Ranking position within the local pack on a relevant query.
Local query
A query expressing local intent, often including geo modifiers.
Local ranking factor
A signal influencing local pack and local finder rankings.
Local relevance
A factor in local ranking measuring how relevant a business is to the searcher's query.
Local schema markup
Another name for LocalBusiness structured data on a page.
Local SEO
Search engine optimization focused on improving visibility for local intent queries.
LocalBusiness schema
A schema.org type representing a local business and its key attributes.
Locale
A combination of language and region settings governing localization.
Localization
Adapting content and design to a specific locale's language and conventions.
Localized content
Content adapted for a specific locale, including language and cultural references.
Location page
A page targeting a specific physical location of a business.
Log file analysis
Examination of server access logs to understand crawler and user behavior.
Long click
A click on a search result followed by an extended on-page session before the user returns.
Long-form content
Content of substantial length, often used to demonstrate depth and topical authority.
Long-tail keyword
A specific, lower-volume query, typically composed of more words.
Lossless compression
An image compression scheme that retains all original detail.
Lossy compression
An image compression scheme that discards some detail to achieve smaller files.
LSI anchor
Anchor text consisting of latent semantic index variations of a primary keyword.
LSI keyword
A semantically related keyword, often discussed in SEO without strict adherence to the underlying mathematical concept.
LTV
Common abbreviation for Lifetime Value.

M

M-dot redirect
A redirect from a desktop URL to a mobile m-dot equivalent based on user agent detection.
M-dot site
A separate mobile-only website hosted on a subdomain such as m.example.com.
Maccabees
An informal name for a Google update around December 2017 affecting low-value pages.
Machine translation
Translation produced automatically by software rather than a human translator.
Macro-conversion
A primary, business-critical conversion such as a purchase or qualified lead.
Malware warning
A browser or Search Console warning indicating that a site is distributing malicious software.
Managed hosting
A hosting arrangement where the provider handles server administration, security, and updates.
Manifest file
A JSON file describing a web application for browsers and Progressive Web App installation.
Manual action
A penalty applied to a site by a human Google reviewer for guideline violations.
Manual actions report
A Search Console report listing any active manual actions affecting a site.
Manual penalty
Another name for a manual action, applied by a human reviewer.
Map pack
A SERP feature showing local business listings alongside a map.
March 2023 core update
A broad core ranking update released by Google in March 2023.
March 2024 core update
A broad core ranking update released by Google in March 2024 with extensive helpful content effects.
March 2025 core update
A broad core ranking update released by Google in March 2025.
Marketing funnel
A conceptual model of how prospects move from awareness to conversion.
Marketing qualified lead
A lead deemed by marketing to meet criteria for sales engagement.
Marketplace listing
A product listing within a marketplace platform such as Amazon, Etsy, or Walmart.
Marketplace SEO
Optimization of listings to rank within third-party marketplace search engines.
Markup helper
A Google-provided tool for generating structured data markup for common content types.
Mass-produced content
Content created in volume with little human judgment, typically considered low quality.
Max-image-preview directive
A robots meta value controlling the maximum size of image previews shown in search results.
Max-snippet directive
A robots meta value controlling the maximum length of text snippets shown in search results.
Max-video-preview directive
A robots meta value controlling the maximum length of video previews shown in search results.
May 2020 core update
A broad core ranking update released by Google in May 2020.
May 2022 core update
A broad core ranking update released by Google in May 2022.
May Day update
A 2010 Google update affecting long-tail query rankings.
Media query
A CSS feature applying styles based on device characteristics such as screen width.
Mediapartners-Google
A Google user agent used by AdSense to evaluate page content for ad targeting.
Medic update
An informal name for an August 2018 Google update that significantly affected health and YMYL sites.
MedicalEntity schema
A schema.org type representing medical entities such as conditions and treatments.
Mega menu
A large multi-column dropdown navigation element used on content-heavy websites.
Mention frequency
The number of times a brand or entity is mentioned across a corpus, used in AI visibility analysis.
Merchant Center
Common abbreviation for Google Merchant Center.
Meta description
An HTML meta tag providing a summary of a page, often shown as a snippet in search results.
Meta description length
The character length of a meta description, with practical SERP truncation around 160 characters.
Meta keywords
A meta tag historically used to list keywords, no longer considered by major search engines.
Meta refresh redirect
A client-side redirect implemented through an HTML meta tag, weaker than a server-side redirect.
Meta tag
An HTML element in the head section providing metadata about a page.
Meta title
Another name for the title tag, the title element in the page head.
Metric
A quantitative measure in analytics, such as sessions or revenue.
Micro-conversion
A smaller conversion action that signals progress toward a primary conversion.
Microdata
An HTML attribute syntax for embedding structured data, less commonly used than JSON-LD.
Microsoft Copilot
Microsoft's branded generative AI assistant integrated across Bing and the Microsoft ecosystem.
Mid-tail keyword
A keyword of moderate length, search volume, and competitiveness between head and long-tail.
Minification
The removal of unnecessary characters from code to reduce file size without changing function.
Mixed content
A page served over HTTPS that loads resources over HTTP, triggering browser warnings.
Mixed intent
A query that reasonably reflects more than one search intent type.
Mj12bot
Majestic's web crawler used to build its link index.
Mobile rendering
Rendering optimized for or evaluated against mobile user agents and viewports.
Mobile SEO
Optimization specifically focused on mobile experience, performance, and rankings.
Mobile usability
The extent to which a site is usable on mobile devices, formerly reported in Search Console.
Mobile usability error
A specific issue impairing usability on mobile, such as small tap targets.
Mobile usability report
A retired Search Console report summarizing mobile usability issues across a site.
Mobile-first indexing
Google's indexing approach that uses the mobile version of a page as the primary indexed version.
Mobile-friendly update
A 2015 Google update increasing the ranking weight of mobile usability on mobile SERPs.
Mobilegeddon
An informal name for the 2015 mobile-friendly update.
Model card
A document describing an AI model's purpose, training data, capabilities, and limitations.
Modified date
The date a piece of content was most recently changed, used as a freshness signal.
Money keyword
A high-value query that drives revenue, typically transactional or commercial intent.
Money page
A page on a site that drives revenue or conversions, often the target of focused link building.
Money site
The primary commercial site that benefits from supporting tier link building.
Monthly search volume
The estimated number of searches performed for a keyword per month.
Movie schema
A schema.org type used to mark up information about movies.
MozRank
A retired Moz metric estimating link-based authority on a logarithmic scale.
MozTrust
A retired Moz metric estimating link-based trust on a logarithmic scale.
MQL
Common abbreviation for Marketing Qualified Lead.
Multi-location SEO
Local SEO across multiple physical locations of a single business.
Multi-touch attribution
An attribution approach assigning credit across multiple touchpoints rather than only one.
Multi-turn query
A search expressed as a sequence of related queries in a conversational session.
Multilingual SEO
Search engine optimization across multiple languages on the same site.
Multiregional SEO
Search engine optimization across multiple regions or countries on the same site.
Multitask Unified Model
Google's MUM, a model designed to understand and answer complex multimodal queries.
MUM
Common abbreviation for Multitask Unified Model.
MX record
A DNS record specifying the mail servers responsible for receiving email for a domain.

N

Naked URL anchor
Another name for a naked link, where anchor text is the bare URL.
Name address phone
The core fields of a local business citation, abbreviated NAP.
Named entity
A specific identifiable thing in text, such as a person, place, or organization.
NAP
Name, Address, and Phone, the core data points of a local business citation.
NAP citation
A reference to a business's name, address, and phone number across the web.
NAP consistency
The accuracy and uniformity of a business's NAP data across all citations.
Native advertising
Paid content designed to match the form and function of the platform on which it appears.
Native lazy loading
Browser-level lazy loading enabled via the loading attribute on images and iframes.
Natural language processing
The branch of AI concerned with how computers understand and produce human language.
Near-duplicate content
Content that is similar but not identical to other content, often created through templates.
Neural matching
A Google ranking technology that uses neural networks to match queries to documents based on concepts.
New gTLD
A generic top-level domain introduced after ICANN's 2013 expansion, such as .ai or .shop.
New user
An analytics user who has not previously visited within the lookback window.
News content
Editorial content reporting on current events.
News report
A Search Console performance report scoped to news search.
News SEO
SEO discipline specific to news publishers and time-sensitive content.
News sitemap
A specialized XML sitemap exposing recent news articles to Google News.
NewsArticle schema
A schema.org type used to mark up news articles for rich result eligibility.
Newsjacking
Producing timely content that capitalizes on a current news story.
Niche SEO
SEO focused on a tightly defined subject area or audience.
NLP optimization
Optimization aligned with natural language processing approaches used by modern search engines.
Noarchive
A robots meta directive preventing search engines from showing a cached link to the page.
Nofollow
An HTML link attribute indicating that search engines should not pass ranking signals through the link.
Noimageindex
A robots meta directive preventing search engines from indexing images on a page.
Noindex
A robots meta or X-Robots-Tag directive instructing search engines not to include a page in their index.
Non-branded keyword
A query that does not contain a brand name.
None directive
A robots meta value equivalent to noindex and nofollow combined.
North Star metric
A primary product or business metric considered the best single indicator of long-term success.
Nosnippet
A robots meta directive instructing search engines not to display a snippet for the page.
Notable online list
A SERP feature highlighting notable inclusions of an entity on third-party lists.
Notranslate
A robots meta directive asking search engines not to offer translation of a page.
November 2021 core update
A broad core ranking update released by Google in November 2021.
November 2023 core update
A broad core ranking update released by Google in November 2023.
November 2024 core update
A broad core ranking update released by Google in November 2024.
NS record
A DNS record specifying the name servers authoritative for a domain.

O

OAI-SearchBot
OpenAI's user agent used to fetch and index web content for SearchGPT.
October 2023 core update
A broad core ranking update released by Google in October 2023.
Off-page SEO
Optimization activity occurring outside the site, primarily link earning and brand building.
Off-site SEO
Another name for off-page SEO.
Offer schema
A schema.org type representing a specific offer for a product or service.
OG description
An Open Graph meta tag providing a summary used in social previews.
OG image
An Open Graph meta tag specifying the preview image for social link previews.
OG title
An Open Graph meta tag specifying the preview title for social link previews.
On-page SEO
Optimization performed within a page itself, including content, structure, and metadata.
On-site SEO
Optimization across a site, including on-page elements and site-wide technical factors.
Online reputation management
Managing how a brand or person appears across search results and other public surfaces.
Open Graph tag
A meta tag using the Open Graph protocol to control link preview rendering on social platforms.
Order confirmation page
An ecommerce page shown after a successful purchase, typically not indexed.
Organic listing
A standard search result not paid for by an advertiser.
Organic traffic
Site visits originating from clicks on organic search listings.
Organization schema
Structured data describing an organization's name, logo, contact details, and social profiles.
Origin server
The originating server in a CDN setup that serves uncached requests.
Original content
Content created in-house and not republished from another source.
Originality
A content quality factor reflecting the uniqueness and freshness of perspective on a topic.
ORM
Common abbreviation for Online Reputation Management.
Orphan page
A page that exists on a site but has no internal links pointing to it.
Out of stock page
An ecommerce page for a product currently unavailable, requiring deliberate handling for SEO.
Outreach
Direct contact with publishers, journalists, or partners to obtain placement, links, or partnerships.

P

PA
Common abbreviation for Page Authority.
PAA
Common abbreviation for People Also Ask, a SERP feature with expandable related questions.
Page Authority
Moz's 0 to 100 metric estimating a specific page's ability to rank.
Page experience report
A Search Console report consolidating Core Web Vitals, HTTPS, and other experience signals.
Page experience signal
A composite Google ranking signal incorporating Core Web Vitals and other UX factors.
Page Experience Update
A Google update introducing the page experience signal as a confirmed ranking factor.
Page indexing report
A Search Console report showing which URLs are indexed and which are excluded with reasons.
Page one ranking
A position within the first ten organic results for a query.
Page report
A Search Console performance report broken down by landing page.
Page slug
The portion of a URL that identifies a specific page within a path structure.
Page speed
The general performance of a web page in delivering content to a user's device.
Page title
Another name for the title tag, the title element in the page head.
Page view
A single instance of a user loading or reloading a page.
PageRank
Google's foundational algorithm for ranking pages based on the structure of links between them.
Pages per session
The average number of pages viewed per session.
PageSpeed Insights
Google's free tool reporting Core Web Vitals and other performance data for a URL.
Panda
A 2011 Google algorithm update targeting low-quality and thin content sites.
Paragraph snippet
A featured snippet that returns a short paragraph extracted from a page.
Parameter handling
The deliberate management of how URL parameters are crawled, indexed, and canonicalized.
Paraphrased content
Content that restates source material in different words while preserving meaning.
Parasite SEO
Publishing content on high-authority third-party domains to leverage their rankings.
Partial hydration
Hydrating only specific interactive components of a page rather than the entire DOM.
Partial match anchor
Anchor text containing some but not all of the target keyword.
PASF
Common abbreviation for People Also Search For, a SERP feature suggesting related queries.
Passage indexing
Google's capability to surface specific passages from longer pages for relevant queries.
Passage ranking
Another name for passage indexing, ranking specific passages independently of full pages.
Path analysis
Analytical examination of the sequence of pages or events users move through.
PBN
Private blog network, a collection of sites built or acquired primarily to link to a target site.
PDP
Common abbreviation for Product Detail Page.
Penguin
A 2012 Google algorithm update targeting manipulative link patterns.
People Also Ask
A SERP feature presenting expandable related questions and answers.
People Also Search For
A SERP feature suggesting related queries that users have searched for.
People-first content
Content created primarily to help people, in line with Google's helpful content guidance.
Performance report
A Search Console report showing impressions, clicks, CTR, and average position by query and page.
Perplexity
An AI search engine that returns synthesized answers with citations to source pages.
Perplexity AI
Another name for the Perplexity search assistant.
Perplexity referral
A site visit originating from a click within Perplexity.
Perplexity-User
Perplexity's user agent used when its assistant fetches pages on behalf of a user query.
PerplexityBot
Perplexity's web crawler used to index content for its search engine.
PerplexityBot block
A robots.txt rule disallowing the PerplexityBot user agent from crawling a site.
Person schema
A schema.org type representing a person and their relationships and attributes.
Personal brand SEO
SEO focused on optimizing the SERP for an individual's name and personal brand.
Personal brand SERP
The first page of search results for an individual's name.
Perspectives filter
A Google search filter surfacing first-person perspective content from forums and creators.
Phantom
An unconfirmed Google update perceived to affect site quality, observed periodically since 2013.
Phishing warning
A browser or Search Console warning indicating that a site is hosting deceptive phishing content.
Picture element
The HTML picture element used to provide multiple image sources for responsive delivery.
Pigeon
A 2014 Google update significantly changing local search ranking and the local pack.
Pillar content
Foundational, comprehensive content on a broad topic, supported by cluster pages on subtopics.
Pillar page
A central page covering a broad topic in depth and linking to related cluster pages.
Pillar post
Another name for a pillar page, a foundational piece of content within a cluster.
Pillar-cluster model
A content strategy model linking a central pillar page to numerous supporting cluster pages.
Pinch to zoom
The mobile gesture for zooming on a viewport, sometimes blocked by misconfigured viewport meta tags.
Pirate
A Google algorithm update targeting sites with high volumes of valid copyright takedown notices.
Pirate metrics
Another name for the AARRR growth metrics framework.
Place schema
A schema.org type representing a physical place.
Plagiarism
Reproducing content from another source without attribution or permission.
PLP
Common abbreviation for Product Listing Page.
Podcast schema
A schema.org type used to describe a podcast and its episodes.
Pogo-sticking
User behavior of clicking a result, returning to the SERP, and clicking another, signaling dissatisfaction.
Pop-up penalty
Informal label for the ranking demotion of pages with intrusive interstitials on mobile.
Position zero
The featured snippet position above the first organic result.
Possum
A 2016 Google update affecting local pack rankings and proximity-based filtering.
Power word
A word selected for its persuasive or emotional effect, used in headline writing.
PR distribution
The act of distributing a press release through wire services or direct outreach to journalists.
Preconnect
A resource hint instructing the browser to establish an early connection to a third-party origin.
Prefetch
A resource hint instructing the browser to fetch a resource likely to be needed for a future navigation.
Preload
A resource hint forcing the browser to fetch a resource needed for the current page early.
Prerendering
Generating fully rendered HTML in advance, either at build time or via a separate rendering service.
Press mention
A reference to a brand or person within a press article, valuable as PR and link signal.
Press release
A formal announcement distributed to journalists for potential coverage.
Primary keyword
The main keyword a page is intentionally optimized to rank for.
Priority tag
A deprecated XML sitemap element formerly used to indicate the relative priority of URLs.
Private blog network
A network of sites built or acquired primarily to link to a target site, against guidelines.
Product detail page
An ecommerce page describing a single product with full attributes and purchase controls.
Product feed
A structured data export of product information used by Merchant Center and other commerce platforms.
Product listing page
An ecommerce page listing multiple products belonging to a category or filter.
Product Reviews Update
A series of Google updates rewarding in-depth, original product reviews over thin affiliate content.
Product reviews update content
Content meeting the standards introduced by Google's product reviews update guidance.
Product rich result
A SERP rich result displaying product details such as price, rating, and availability.
Product schema
Structured data marking up a product for rich result eligibility and shopping surfaces.
Programmatic SEO
The strategy of generating large numbers of pages from structured data templates to capture long-tail demand.
Progressive Web App
A website built with web technologies that can be installed and used like a native app.
Prominence factor
A local ranking factor reflecting how well-known and authoritative a business is in its market.
Prompt
An input given to a language model that instructs it to generate a response.
Prompt engineering
The discipline of crafting prompts to achieve desired outputs from a language model.
Prompt injection
A manipulation in which adversarial instructions are embedded in inputs to alter a model's behavior.
Property
In Search Console or Analytics, a unit representing a website or app for which data is collected.
Protocol
The set of rules governing communication between systems, such as HTTP or HTTPS.
Proximity factor
A local ranking factor reflecting how close a business is to the searcher.
Publish date
The date a piece of content was originally published, often shown and marked up.
Publishing cadence
The regular frequency at which a site publishes new content.
Pull quote
A typographically distinct excerpt from body content used to highlight a key statement.
PWA
Common abbreviation for Progressive Web App.

Q

Q&A content
Content structured as questions and answers, well suited to forums and FAQ formats.
QAPage schema
A schema.org type representing a page formatted around a single question and its answers.
QDD
Common abbreviation for Query Deserves Diversity.
QDF
Common abbreviation for Query Deserves Freshness.
QRG
Common abbreviation for Quality Rater Guidelines.
Quality Rater Guidelines
Google's published manual instructing human raters how to evaluate search result quality.
Query
Another name for a search query, the text or input a user submits to a search engine.
Query deserves diversity
A ranking concept indicating that some queries warrant a diverse set of result types.
Query deserves freshness
A ranking concept indicating that some queries warrant prioritizing recent content.
Query refinement
A user behavior of modifying a query after seeing initial results.
Query reformulation
Another name for query refinement, restating a query to obtain better results.
Query report
A Search Console performance report broken down by search query.
Query string parameter
A name-value pair appended to a URL after a question mark.
QUIC
A modern transport protocol underlying HTTP/3, designed for faster, more reliable connections.
Qwoted
A platform connecting journalists with expert sources, similar in concept to HARO.

R

RAG
Retrieval-Augmented Generation, an AI pattern combining retrieval over a corpus with generative response.
RankBrain
A 2015 Google ranking system using machine learning to interpret novel queries.
Ranking
The position at which a page appears in search results for a given query.
Ranking factor
A signal used by a search engine to determine the order of results for a query.
Ranking position
Another name for ranking, the position of a page in search results.
RDFa
An HTML attribute syntax for embedding structured data, less common than JSON-LD.
Readability score
A score estimating how easily a piece of text can be understood by a typical reader.
Reading level
An indicator of the educational level required to comprehend a piece of text.
Real user monitoring
Performance measurement based on data collected from real visitors during normal site use.
Recipe optimization
Structuring recipe content for clarity and rich result eligibility.
Recipe rating schema
Structured data marking up ratings for a recipe.
Recipe rich result
A SERP rich result displaying recipe details such as cook time, calories, and rating.
Recipe schema
Structured data marking up a recipe for rich result eligibility.
Recipient page
A page receiving an inbound link in a link building or analysis context.
Reddit visibility surge
The notable increase in Reddit's visibility in Google's search results following 2023 prioritization changes.
Redirect chain
A sequence of multiple redirects between an initial URL and the final destination.
Redirect loop
A misconfiguration in which redirects cycle without resolving to a final URL.
Referer header
An HTTP request header indicating the URL from which a request originated, with its long-standing misspelling.
Referral
A site visit originating from a click on another website's link.
Referral traffic
Visits attributed to clicks from other websites.
Referrer
Another name for the source page identified in the Referer header.
Referring domain
A unique domain that contributes one or more backlinks to a target site.
Referring IP
An IP address from which one or more backlinks originate.
Refine results
A SERP feature offering refinement suggestions for narrowing or expanding a query.
Refurbished product page
An ecommerce page for refurbished items, requiring careful indexing and schema choices.
Regex filter
A filter using regular expressions to match URLs or queries in Search Console or analytics.
Region code
A code identifying a geographic region used in hreflang and locale settings.
Rel canonical
Another name for the canonical link element.
Rel=next
A deprecated link relation indicating the next page in a paginated series.
Rel=prev
A deprecated link relation indicating the previous page in a paginated series.
Removals tool
A Search Console tool for temporarily hiding URLs from Google search results.
Render-blocking resource
A resource that delays the browser's first render until it is downloaded and processed.
Renderability
The extent to which a search engine can render a page's content for indexing.
REP
Common abbreviation for Robots Exclusion Protocol.
Republished content
Content originally published elsewhere and republished on another site, with or without canonicalization.
Reputation management
The practice of monitoring and shaping how a brand or person is represented online.
Reputation SEO
SEO focused on shaping a brand or person's search reputation.
Request header
A field in an HTTP request providing context such as user agent or accepted languages.
Resource page link building
Acquiring backlinks by securing inclusion on third-party resource lists.
Response header
A field in an HTTP response providing metadata about the returned resource.
Responsive image
An image set served at varying sizes or formats based on device characteristics.
Responsive web design
A design approach using flexible layouts and media queries to adapt to different viewports.
Restaurant schema
A schema.org type representing a restaurant and its key attributes.
Retention
The proportion of users or revenue retained over a defined period, opposite of churn.
Retrieval-augmented generation
An AI architecture combining external retrieval with generative model output.
Return on ad spend
Revenue generated per unit of advertising spend.
Return on investment
The ratio of net gain to cost for an investment.
Return to SERP rate
The proportion of users who return to the SERP shortly after clicking a result.
Return visit
A visit by a user previously seen on the site.
Returning user
A user who has previously visited a site within the lookback window.
Revenue
Income generated from sales or other monetized activities.
Reverse proxy SEO
Using a reverse proxy or CDN to inject SEO changes between the origin and the user.
Review response
An owner-issued reply to a customer review, used in reputation management.
Review schema
Structured data marking up a review of a product, service, or other item.
Review velocity
The rate at which a business accumulates new reviews over time.
Reviews Update
Common shorthand for the Product Reviews Update.
Rewritten content
Content created by rewriting existing source material into new wording.
Rich result
A search result enhanced by structured data with visual or interactive elements.
Rich result report
A Search Console report on rich result eligibility and errors by structured data type.
Rich Results Test
Google's tool for testing whether a page is eligible for specific rich result types.
Rich snippet
An older name for a rich result, an enhanced organic listing.
Right-to-left text
Languages or scripts written from right to left, requiring corresponding layout adjustments.
ROAS
Common abbreviation for Return on Ad Spend.
Robots Exclusion Protocol
The standard governing how robots.txt and meta robots directives are interpreted by crawlers.
Robots Exclusion Standard
Another name for the Robots Exclusion Protocol.
Robots meta tag
An HTML meta tag in the page head that instructs crawlers about indexing and link following.
Robots.txt
A plain text file at the root of a domain that instructs crawlers which paths they should not request.
Robots.txt AI block
A robots.txt rule disallowing AI training crawlers from accessing a site.
Rogerbot
Moz's primary web crawler, used to populate its keyword and link indices.
ROI
Common abbreviation for Return on Investment.
Root domain
The base domain such as example.com without subdomains.
Roundup post
An article curating multiple resources, products, or perspectives on a single topic.
RTL language
A language written right to left, such as Arabic or Hebrew.
RUM
Common abbreviation for Real User Monitoring.
RWD
Common abbreviation for Responsive Web Design.

S

SaaS SEO
SEO discipline tailored to software-as-a-service companies and their content needs.
SAB
Common abbreviation for Service Area Business.
Sales funnel
Another name for the marketing funnel viewed from a sales perspective.
Sales page
A page designed primarily to convert visitors into customers for a specific product or service.
Sales qualified lead
A lead deemed by sales to meet criteria for direct selling activity.
Salient entity
An entity central to the meaning of a piece of content.
Scaled content abuse
Google's policy term for producing many pages of low-value content at scale to manipulate rankings.
Schema enhancement report
A Search Console report covering structured data enhancements detected on a site.
Schema for AI
Structured data implemented specifically to improve recognition by AI answer systems.
Schema markup
Structured data added to a page using a vocabulary such as Schema.org.
Schema validator
A tool that checks structured data syntax and adherence to schema definitions.
Schema.org
A collaborative vocabulary of structured data types used across major search engines.
Scraped content
Content copied from another site, generally considered low value and against search guidelines.
Screaming Frog SEO Spider
A widely used desktop application that crawls websites for technical SEO analysis.
Script tag
The HTML script element used to embed or reference JavaScript code in a page.
Scroll depth
The distance a user scrolls down a page, used as an engagement signal.
Search analytics
The discipline of analyzing search performance data to inform optimization decisions.
Search appearance
A Search Console performance dimension grouping queries by the SERP feature presentation.
Search Console
Common abbreviation for Google Search Console.
Search demand
The total volume of searches across a topic or set of keywords.
Search engine
A software system that crawls, indexes, and retrieves web pages in response to user queries.
Search engine optimization
The discipline of improving a site's visibility and traffic from organic search results.
Search engine results page
The page returned by a search engine in response to a query.
Search Generative Experience
Google's earlier name for its generative AI search experience, since rebranded as AI Overview and AI Mode.
Search index
A search engine's database of crawled and processed pages used to retrieve results.
Search intent
The underlying goal a user has when entering a search query.
Search journey
The sequence of queries and interactions a user completes to satisfy an information need.
Search Quality Rater
A human evaluator following Google's Quality Rater Guidelines to score search results.
Search query
The words or phrase a user enters into a search engine.
Search refinement
Another name for query refinement, narrowing or modifying a query.
Search trend
A pattern in search demand over time, often used to identify emerging or declining topics.
Search type report
A Search Console performance report filterable by search type, such as web or image.
Search volume
The estimated number of searches a query receives in a defined period.
Search-first content
Content created primarily to attract search traffic rather than to help users.
SearchGPT
OpenAI's search-oriented product that synthesizes answers with citations.
Seasonal keyword
A query whose volume rises and falls predictably with the calendar.
Seasonal product page
An ecommerce page for a product or category with seasonal demand patterns.
Secondary keyword
A supporting keyword targeted by a page in addition to its primary keyword.
Secure protocol
A communication protocol using encryption, such as HTTPS.
Security header
An HTTP response header that improves a site's security posture, such as HSTS or CSP.
Security issue
A reported problem affecting a site's security, such as malware infection.
Security issues report
A Search Console report listing detected security issues affecting a property.
Seed keyword
A starting keyword used to generate a broader set of related keywords during research.
Segment
A subset of analytics data defined by specific filters or conditions.
Self-referencing canonical
A canonical tag pointing to the URL on which it appears, confirming it as the preferred version.
Semantic keyword
A keyword semantically related to a primary keyword, used to support topical depth.
SemrushBot
The web crawler operated by Semrush to populate its SEO datasets.
SEO
Search engine optimization, the discipline of improving organic search visibility and traffic.
SEO brief
A specification document guiding writers on intent, structure, and SEO requirements for a piece.
September 2022 core update
A broad core ranking update released by Google in September 2022.
SERP
Common abbreviation for Search Engine Results Page.
Server cache
Caching layer at the server that stores rendered or computed responses to speed up subsequent requests.
Server location
The geographic location of the server hosting a site, sometimes used as a soft geotargeting signal.
Server log
A record of requests handled by a web server, used in technical SEO and performance analysis.
Server response time
The time a server takes to begin sending a response after receiving a request.
Server-side redirect
A redirect issued by the server through HTTP status codes such as 301 or 302.
Server-side rendering
Rendering pages into HTML on the server before sending them to the client.
Server-side tagging
Routing tracking data through a server-side endpoint to control collection and reduce client load.
Service area
The geographic area in which a service area business operates.
Service area business
A business that serves customers at their locations rather than from a public storefront.
Service area page
A localized page targeting a specific service area for a SAB.
Service schema
A schema.org type representing a service offered by a business.
Service worker
A browser script enabling offline support, caching strategies, and push notifications for a Progressive Web App.
Session
A defined period of user interaction with a site, bounded by inactivity or other rules.
Session ID URL
A URL containing a session identifier, often a source of duplicate content if indexed.
Sessions per user
The average number of sessions per unique user over a period.
SGE
Common abbreviation for Search Generative Experience.
Shadow DOM
A web platform feature for encapsulating DOM and styling within a component.
Share of model
An estimate of how often a brand or page is referenced within an AI model's responses.
Share of voice
A brand's share of total visibility within a defined competitive set or topic.
Share of voice in AI
Another name for share of model in the context of AI search visibility.
Shared hosting
A hosting arrangement where multiple sites share resources on the same server.
Shared IP
An IP address used by multiple sites simultaneously.
Shopping ads
Paid product advertisements displayed in Google Shopping and related surfaces.
Short click
A click followed by a fast return to the SERP, taken as a signal of dissatisfaction.
Short videos shelf
A SERP feature highlighting short-form videos relevant to a query.
Short-form content
Content of relatively brief length, often used for quick-hit articles or social posts.
Short-tail keyword
A short, often single-word keyword with high volume and broad intent.
Siloing
An information architecture practice of grouping related content into themed sections.
Sistrix Visibility Index
Sistrix's proprietary metric estimating a domain's overall visibility in search.
Site architecture
The overall structure of a website's pages and navigation.
Site migration
The process of moving a site to a new domain, structure, or platform while preserving SEO equity.
Site reputation
The general standing of a domain in terms of trust and authority.
Site reputation abuse policy
Google's policy restricting publication of unrelated third-party content on a host site to exploit its rankings.
Site search optimization
Optimization of an internal site search experience for relevance and conversion.
Site structure
Another name for site architecture, the organization of pages and navigation.
Sitemap
A file or page listing URLs available on a site for crawler discovery.
Sitemap directive in robots.txt
A line in robots.txt pointing to a sitemap location for crawler discovery.
Sitemap index file
An XML file referencing multiple sitemap files, used to scale beyond URL or size limits.
Sitemap ping
A historical mechanism for notifying search engines of sitemap updates by URL request.
Sitemap protocol
The XML schema and rules defining how sitemaps are structured and consumed.
Sitemap report
A Search Console report showing submitted sitemaps and their processing status.
Size variant
A product option representing a size of an underlying SKU family.
SKU page
An ecommerce page representing a single SKU, often a product variant.
Skyscraper content
A piece of content built to be the most comprehensive resource on its topic.
Skyscraper technique
A link building method of producing better content than top competitors and outreach for backlinks.
Slackbot
Slack's preview bot used when URLs are shared in Slack messages.
Sneaky redirect
A deceptive redirect serving different content to users and crawlers, against guidelines.
Snippet bait
Content structured specifically to be selected as a featured snippet.
Snippet hijacking
Replacing another page in a featured snippet by better matching the snippet pattern.
Snippet optimization
Adjusting content and formatting to improve eligibility for SERP snippets.
SOA record
A DNS Start of Authority record holding administrative information about a zone.
Social traffic
Visits attributed to clicks from social media platforms.
Soft 404
A page that returns a 200 status code but presents a 404-like message, treated by Google as a 404.
SoftwareApplication schema
A schema.org type representing a software application and its attributes.
Sort URL
A URL representing a sorted view of a listing, typically containing query parameters.
Source attribution
The identification of source pages cited within an AI-generated answer.
Source grounding
The practice of constraining AI output to specific retrieved sources.
Source of Sources
The platform succeeding HARO for connecting journalists and expert sources.
Source/medium
A combined GA dimension representing where a visit came from and how.
Spam policy violation
An infraction of a search engine's published spam policies that may trigger penalties.
Spam Score
Moz's metric estimating the spamminess risk of a domain or page based on multiple signals.
Spam update
A Google update specifically targeting policy-violating spam patterns.
Speakable schema
Structured data marking content as suitable for text-to-speech reading on voice surfaces.
Speed Index
A Lighthouse performance metric measuring how quickly content is visually populated during load.
Speed update
A 2018 Google update making mobile page speed a ranking factor for the slowest pages.
Spider
Another name for a web crawler.
Spider trap
A site condition that causes crawlers to follow unbounded URLs, wasting crawl budget.
Splash page
An entry page typically displayed before site access, often light on indexable content.
Spun content
Content created by automatically rewording existing material, considered low quality and against guidelines.
SQL
Common abbreviation for Sales Qualified Lead in a marketing context.
Squeeze page
A focused landing page designed to capture a single conversion such as an email signup.
Srcset attribute
An HTML attribute specifying multiple image sources for responsive delivery.
SSG
Common abbreviation for Static Site Generation.
SSL certificate
A digital certificate authenticating a site's identity and enabling encrypted HTTPS connections.
SSR
Common abbreviation for Server-Side Rendering.
Star rating snippet
A SERP enhancement displaying aggregate star ratings under a result.
Static site generation
Building HTML pages at deploy time so each request is served from prebuilt files.
Static URL
A URL whose path does not change based on parameters or session state.
Status code
Common shorthand for HTTP status code.
Structured data
Standardized markup providing machine-readable information about a page's content.
Structured Data Testing Tool
A retired Google tool for validating structured data, replaced by the Rich Results Test.
Style guide
A document specifying writing, design, or coding conventions for a brand or team.
Style tag
The HTML style element used to embed CSS within a page.
Subcategory page
A page representing a narrower category beneath a parent category.
Subdirectory
A path component within a site that organizes content beneath the root.
Subdirectory targeting
Using a subdirectory to host content for a specific country or language.
Subdomain
A prefix to a domain name that creates a separate hostname under the same domain.
Subdomain targeting
Using a subdomain to host content for a specific country or language.
Subfolder
Another name for a subdirectory within a site's URL structure.
Subheading
A heading subordinate to the main heading of a section or page.
Supporting content
Cluster pages that support a pillar page within a topic cluster.
Surfaces across Google
A program exposing structured product data across Google surfaces such as Search and Images.
Syndicated content
Content republished on third-party sites under a syndication agreement.
Synonym keyword
A keyword that is a synonym of another, often grouped within the same topical cluster.
Synthesis layer
The component of an AI search system that composes a generated answer from retrieved sources.
Synthetic answer
An answer produced by combining retrieved information into a new generated response.
Synthetic monitoring
Performance monitoring through scripted test runs rather than real user data.
System prompt
A prompt setting overall instructions or context for a language model's behavior.

T

Table of contents
A page section listing headings within the page, often with anchor links.
Table snippet
A featured snippet that returns a table extracted from a page.
Tag
An HTML element marker, or a tracking and marketing tag deployed via a tag manager.
Tangram
A reported Google ranking system involved in final result assembly.
Tap target
A clickable element on a touch interface, sized for finger-based interaction.
Target keyword
Another name for a primary keyword, the keyword a page is intentionally optimized for.
Taxonomy
A classification system used to organize content into categories and subcategories.
TBT
Total Blocking Time, a Lighthouse metric measuring time the main thread is blocked by long tasks.
Technical SEO
The branch of SEO focused on crawlability, indexability, performance, and infrastructure.
TelegramBot
Telegram's preview bot used when URLs are shared in Telegram messages.
Tertiary keyword
A supplementary keyword targeted by a page beyond its primary and secondary keywords.
TF
Common abbreviation for Trust Flow.
TF-IDF
Term Frequency Inverse Document Frequency, a classical statistical measure of word importance in a document.
Thank you page
A confirmation page shown after a user completes a conversion action.
Thin content
Content with little substantive value relative to a query's needs, often penalized in quality assessments.
Things to know
A SERP feature presenting common follow-up questions and points related to a topic.
Three-click rule
A heuristic suggesting users should reach any page within three clicks, more aspirational than rigorous.
Tier 1 placement
Coverage in a top-tier publication, valuable for both PR and SEO.
Tier 1 publication
A leading publication considered a gold standard for press coverage.
Time on page
The time a user spends on a specific page during a session.
Time on site
The total time a user spends on a site during a session.
Time to first byte
The time from request to receipt of the first byte of the server response.
Time to Interactive
A performance metric measuring when a page becomes reliably interactive.
Title length
The character or pixel length of a title tag, with practical SERP truncation around 60 characters.
Title tag
The HTML title element specifying the page title, typically used as the SERP headline.
TLS certificate
A digital certificate enabling encrypted TLS connections, the modern equivalent of SSL.
Token
A unit of text processed by a language model, often a word fragment or punctuation.
Tokenization
The process of breaking text into tokens for processing by a language model.
Tone of voice
The character and style of a brand's communication.
Toolbar PageRank
Google's retired publicly visible PageRank value, last updated in 2013.
Top linking sites
A Search Console report identifying the external sites that link most to a property.
Top linking text
A Search Console report identifying the most common anchor text from external links to a site.
Top stories
A SERP feature showcasing relevant news articles for a query.
Top ten ranking
A position within the top ten organic results for a query.
Top three ranking
A position within the top three organic results for a query.
Topic cluster
A grouping of related pages organized around a central pillar to demonstrate topical coverage.
Topic matrix
A planning artifact mapping subtopics to formats or audiences within a content strategy.
Topical authority
The recognized expertise of a site within a defined topic area, considered a ranking factor.
Topical authority score
A proprietary score grading a site's authority within a topic.
Topical content
Content focused on a specific topic, often part of a larger cluster.
Topical depth
The thoroughness with which a site or page covers a topic.
Topical relevance
The degree to which a page matches the topic of a query.
Topical Trust Flow
Majestic's variant of Trust Flow scored by topical relevance.
Total Blocking Time
A Lighthouse metric capturing the total duration the main thread is blocked by long tasks.
Total user
A GA4 metric counting all users who triggered any event in the period.
Touch target size
The minimum recommended physical size of tappable elements on a touch interface.
Tracking parameter
A URL parameter used to attribute traffic to a campaign or source.
Trailing slash
A forward slash at the end of a URL path, treated as a separate URL from the unslashed version.
Training data
The text or data used to train a language or AI model.
Transactional intent
Search intent indicating an immediate intent to buy, download, or sign up.
Transcreation
Adapting content across languages and cultures while preserving creative intent rather than literal meaning.
Translated content
Content rendered into a different language from its original form.
Tree shaking
A build process that removes unused code from JavaScript bundles to reduce size.
Trending content
Content tied to a topic experiencing a sudden rise in interest.
Trigger
A condition in Google Tag Manager that determines when a tag fires.
Trip schema
A schema.org type representing a planned trip or itinerary.
TripAdvisor
A travel review platform used as both a destination and a citation source.
Trust Flow
Majestic's metric estimating the trustworthiness of links pointing to a URL or domain.
TrustRank
An academic algorithm for propagating trust through a link graph from a seed of trusted sites.
Trustworthiness
One of the four EEAT factors, referring to the perceived credibility of a creator or site.
TTFB
Time to First Byte, the time from request to receipt of the first response byte.
TTI
Time to Interactive, a metric measuring when a page becomes reliably interactive.
Tutorial
An instructional article or video teaching how to perform a task.
TVSeries schema
A schema.org type representing a television series and its episodes.
Tweet box
A SERP feature displaying recent tweets relevant to a query.
Twiddler
A Google internal mechanism that re-ranks or modifies results after initial retrieval.
Twitter card
Twitter's protocol for controlling how a URL appears when shared on the platform.
Twitter card tag
A meta tag implementing a specific Twitter card type and its associated fields.
Twitter pack
A SERP feature displaying recent tweets relevant to a query.
Twitterbot
Twitter's bot that fetches pages to generate previews when URLs are shared.
Two-wave indexing
Google's historical pattern of indexing HTML first and rendering JavaScript in a later pass.
TXT record
A DNS record holding arbitrary text data, often used for domain verification and email policies.

U

UA
Common abbreviation for Universal Analytics.
UGC
Common abbreviation for User-Generated Content.
UGC attribute
A link relation indicating that a backlink originates from user-generated content.
Ultimate guide
A long-form article positioned as the definitive resource on its topic.
Unavailable_after
A robots meta directive specifying a date and time after which a page should not be indexed.
Unique page view
A page view counted once per session even if the user views the same page multiple times.
Universal Analytics
Google's previous-generation analytics platform, sunset in 2023 in favor of GA4.
Unlinked mention
A reference to a brand on the web that does not include a hyperlink.
UR
Common abbreviation for URL Rating.
URI
Uniform Resource Identifier, a string identifying a resource on the web.
URL
Uniform Resource Locator, the address used to access a resource on the web.
URL depth
The number of path components in a URL beneath the root.
URL hierarchy
The structural arrangement of paths within a site's URLs.
URL Inspection tool
A Search Console feature for inspecting how Google sees a specific URL.
URL length
The total number of characters in a URL, with very long URLs sometimes being truncated in displays.
URL parameter
A name-value pair in the query string portion of a URL.
URL parameter tool
A retired Search Console tool for instructing Google how to handle parameters during crawl.
URL Rating
Ahrefs' page-level metric estimating the strength of a URL's backlink profile.
URL slug
Another name for a page slug, the human-readable identifier within a path.
URL structure
The overall design of a site's URL paths.
Useful crawl
A search engine crawl request that fetches an indexable, valuable URL rather than wasted budget.
User agent string
A string sent by a client identifying its software, used for crawler verification and content negotiation.
User intent
Another name for search intent, the goal behind a query.
User prompt
A user's input to a language model within a conversation.
User property
A GA4 attribute attached to a user that persists across sessions.
User-agent directive
A robots.txt line specifying which crawler the following rules apply to.
User-generated content
Content created by users of a platform rather than its operators.
UTF-8 encoding
A widely used character encoding capable of representing every character in Unicode.
UTM parameter
A URL parameter following the Urchin Tracking Module convention used to attribute traffic.

V

Variable
A placeholder in tag manager that holds a value used by tags or triggers.
Variant canonical
A canonical tag pattern designating one product variant as the indexable version among siblings.
Variant page
An ecommerce page representing a specific product variant such as a size or color.
Variation keyword
A keyword variant of a primary term, often differing in modifier or word order.
Vary header
An HTTP response header indicating which request headers determine variant content for caching.
Vary User-Agent
A specific Vary header value used when content differs by user agent, common for separate mobile sites.
Vector database
A database optimized for storing and searching vector embeddings.
Vector embedding
A numerical vector representation of text or other content used in semantic and AI retrieval.
Verified bot
A crawler whose identity has been authenticated, typically through reverse DNS or signed user agent.
Versus post
An article comparing two products, services, or approaches against each other.
Video SEO
Optimization of video content for visibility in search and within video platforms.
Video sitemap
A specialized XML sitemap exposing video URLs and metadata to crawlers.
Video snippet
A SERP element featuring a video thumbnail and metadata for a result.
VideoObject schema
Schema.org type used to mark up video content with metadata such as duration and upload date.
View-all page
A single page displaying all items in a paginated set, sometimes used for canonical consolidation.
Viewport meta tag
An HTML meta tag controlling layout viewport behavior on mobile browsers.
Vince update
A 2009 Google update considered to favor large, established brands for generic queries.
Virtual DOM
An in-memory representation of the DOM used by frameworks like React to optimize updates.
Visibility score
A composite metric estimating overall organic visibility, typically reported by SEO platforms.
Visit-in-person intent
Search intent indicating the user wants to visit a location physically.
Visual SEO
Optimization of visual content such as images and videos for search visibility.
Voice SEO
Optimization of content for voice-driven search and assistants.
VPS hosting
Virtual Private Server hosting, a virtualized hosting tier between shared and dedicated.

W

Walkthrough
A detailed step-by-step demonstration, typically more thorough than a tutorial.
Walmart Marketplace SEO
Optimization of product listings within Walmart's online marketplace search.
Web grounding
Constraining a generative model's response to information retrieved from web sources.
Web Rendering Service
Google's headless rendering pipeline used to evaluate JavaScript-rendered pages.
Web Vitals JS library
A small JavaScript library from Google for measuring Core Web Vitals in real user environments.
WebP
An image format developed by Google offering strong compression for web images.
WebPage schema
A schema.org type representing a generic web page and its key attributes.
WebPageTest
An open-source web performance testing tool offering detailed waterfall and metric analysis.
WebSite schema
A schema.org type representing a website, often used to enable sitelinks search box.
White hat SEO
Optimization tactics fully aligned with search engine guidelines and user-centered standards.
White paper
A long-form authoritative document on a topic, often used in B2B lead generation.
Whois
A protocol and database providing registration information for domain names.
Wishlist page
An ecommerce page where users save products of interest for later consideration.
Word count
The number of words on a page, sometimes used loosely as a depth proxy.
WRS
Common abbreviation for Web Rendering Service.
www vs non-www
The choice between using a www subdomain or the apex domain as the canonical hostname.

X

X pack
Another name for the Twitter pack SERP feature, updated for the X rebrand.
X-default
A hreflang value indicating the default version of a page for users not matching other targets.
X-Frame-Options
An HTTP header that controls whether a page may be embedded in iframes.
X-Robots-Tag
An HTTP response header version of the robots meta tag, applicable to non-HTML resources.
XML sitemap
An XML file listing site URLs to aid crawler discovery and indexing.

Y

Yandex
Russia's leading general search engine, with its own crawler and ranking system.
Yandex Bot
Yandex's primary web crawler.
Yandex Webmaster
Yandex's webmaster console for monitoring site performance and indexing.
Yellow Pages
A traditional business directory available online and used as a local citation source.
Yelp
A review platform widely used for local business citations and reputation.
YMYL
Common abbreviation for Your Money or Your Life, content categories with elevated quality expectations.
YMYL SEO
SEO discipline tailored to YMYL topics that face stricter quality standards.
You.com
A general search engine offering a privacy-focused interface and an integrated AI assistant.
Your Money Your Life
Content domains with elevated quality expectations because they affect health, finances, or safety.

Z

Zero-click result
A SERP element that satisfies the user's query without requiring a click.

#

10x content
Content engineered to be ten times more useful than the highest-ranking competing result, popularized by Rand Fishkin.
200 OK
The HTTP status code indicating that a request succeeded and the requested resource was returned normally.
3-pack
The block of three local business listings shown alongside a map in local search results, also called the local pack.
301 Moved Permanently
An HTTP status code signaling that a URL has been permanently moved, with most ranking signals passed to the destination.
301 redirect
A permanent redirect from one URL to another, used to consolidate ranking signals onto the destination URL.
302 Found
An HTTP status code indicating a temporary redirect where the original URL is expected to be restored.
302 redirect
A temporary redirect generally not intended to pass full ranking signals to the destination.
304 Not Modified
An HTTP status code indicating that a cached version of a resource is still valid and need not be redownloaded.
307 redirect
An HTTP/1.1 temporary redirect that preserves the original request method and body.
308 redirect
An HTTP permanent redirect that preserves the original request method, equivalent in intent to a 301.
401 Unauthorized
An HTTP status code indicating that valid authentication credentials are required and are missing or invalid.
403 Forbidden
An HTTP status code indicating that the server understood the request but refuses to authorize it.
404 error
A response indicating that the requested URL does not exist on the server.
404 Not Found
The HTTP status code returned when a URL is not found at the requested location on the server.
410 gone
An HTTP status code indicating that a resource has been intentionally and permanently removed.
429 Too Many Requests
An HTTP status code indicating that a user or crawler has sent too many requests in a given period.
500 Internal Server Error
An HTTP status code indicating an unexpected server condition that prevented the request from being fulfilled.
502 Bad Gateway
An HTTP status code returned when a gateway or proxy receives an invalid response from an upstream server.
503 Service Unavailable
An HTTP status code indicating the server is temporarily unable to handle the request, often due to maintenance or overload.
504 Gateway Timeout
An HTTP status code indicating that an upstream server failed to respond within the allotted time.