Glossary
AI SEO terms explained simply
68 articles in this category
Vector Search
Vector search finds content by meaning rather than keywords, using mathematical similarity between embeddings. Learn how vector search powers AI retrieval and why it matters for AI SEO.
TTFB (Time to First Byte)
TTFB (Time to First Byte) measures how long it takes a server to send the first byte of data after receiving a request. Learn why TTFB is critical for AI crawler access and AI SEO.
Transformer
A Transformer is the neural network architecture behind modern AI models like ChatGPT, Gemini, and Claude. Learn how Transformers work, why they revolutionized AI, and what they mean for AI SEO.
Token (AI)
A token is the basic unit of text that large language models process. Learn what tokens are, why they matter for AI SEO, and how token limits affect AI-generated answers.
What Is Structured Data? Definition and Why AI Models Need It
Structured data is machine-readable information embedded in web pages that helps search engines and AI models understand your content. Learn what it is, how it works, and why it matters for AI SEO.
SSR (Server-Side Rendering)
SSR (Server-Side Rendering) is a technique where HTML is generated on the server before being sent to the browser. Learn why SSR is critical for AI SEO and how it affects AI crawler access.
What Is an XML Sitemap? Definition and Why It Matters for SEO
An XML sitemap is a file that lists all the important pages on your website, helping search engines and AI crawlers discover and index your content. Learn what sitemaps are, how they work, and best practices.
Share of Voice (SOV) in AI
Share of Voice (SOV) in AI measures the percentage of AI-generated responses that mention or recommend your brand compared to competitors. Learn the definition, how it is calculated, and why it is a key AI SEO metric.
What Is a SERP (Search Engine Results Page)? Definition and Why It Matters for AI SEO
A SERP (Search Engine Results Page) is the page a search engine displays after a user submits a query. Learn what SERPs are, how they work, and why they matter for both traditional and AI SEO.
What Is Schema.org? Definition and Role in AI SEO
Schema.org is a collaborative vocabulary for structured data markup on web pages. Learn what Schema.org is, how it works, and why AI models use it to understand your content.
What Is Robots.txt? Definition and Why It Matters for AI SEO
Robots.txt is a text file that tells search engine and AI crawlers which pages they can and cannot access on your website. Learn what robots.txt is, how it works, and why it is critical for AI visibility.
What Is Rich Results? Definition and How They Work
Rich results are enhanced search listings that display additional visual elements like star ratings, images, FAQs, and pricing -- powered by structured data markup on your pages.
What Is RAG (Retrieval-Augmented Generation)? Definition and How It Works
RAG (Retrieval-Augmented Generation) is a technique that combines AI language models with real-time information retrieval, enabling AI to cite current, factual sources in its responses.
Query Fan-Out
Query fan-out is the process where an AI model breaks a single user question into multiple sub-queries to retrieve more comprehensive information from the web. Learn the definition, how it works, and why it matters for AI SEO.
What Is Prompt Engineering? Definition and How It Works
Prompt engineering is the practice of crafting effective inputs (prompts) for AI models to produce accurate, relevant, and useful outputs -- a skill that also informs AI SEO strategy.
What Is PerplexityBot? Perplexity AI's Web Crawler Explained
PerplexityBot is the web crawler used by Perplexity AI to fetch and index content for its AI search engine. Learn how it works, how to manage access, and why it matters for AI SEO.
What Is Perplexity AI? The AI Search Engine Explained for AI SEO
Perplexity AI is an AI-powered search engine that provides cited, conversational answers. Learn how it works, why it matters for AI SEO, and how to optimize your site for Perplexity.
What Is Open Graph? Definition and How It Works
Open Graph is a metadata protocol that controls how your web pages appear when shared on social media platforms like Facebook, LinkedIn, and X/Twitter -- and increasingly influences how AI models preview your content.
What Is OAI-SearchBot? OpenAI's Real-Time Search Crawler Explained
OAI-SearchBot is OpenAI's real-time search crawler that fetches web content for ChatGPT search results. Learn how it differs from GPTBot and why it is critical for AI visibility.
What Is Noindex? Definition and Why It Matters for SEO and AI Visibility
Noindex is a directive that tells search engines and AI crawlers not to include a specific page in their index. Learn what noindex is, how to use it, and its implications for AI visibility.
What Is NAP (Name, Address, Phone)? Definition and How It Works
NAP stands for Name, Address, Phone -- the three core identity elements of a local business that must be consistent across all online platforms to build trust with search engines and AI models.
Multi-Modal AI
Multi-modal AI is artificial intelligence that can process and generate multiple types of data — text, images, audio, and video. Learn what it means and why it matters for AI SEO.
What Is Microsoft Copilot? Bing-Powered AI Assistant Explained for AI SEO
Microsoft Copilot is an AI assistant powered by Bing search and OpenAI models. Learn how it works, why it is an overlooked AI SEO opportunity, and how to optimize for Copilot visibility.
What Is llms.txt? Definition and How It Works
llms.txt is a proposed standard file that tells AI language models about your website's structure, content, and preferred handling -- like a robots.txt designed specifically for LLMs.
LLMO (Large Language Model Optimization)
LLMO (Large Language Model Optimization) is the practice of optimizing content to be surfaced and cited by large language models like ChatGPT, Gemini, and Claude. Learn the definition, techniques, and how LLMO relates to AI SEO.
LLM (Large Language Model)
A Large Language Model (LLM) is an AI system trained on vast text datasets to generate human-like responses. Learn what LLMs are, how they work, and why they matter for AI SEO.
LCP (Largest Contentful Paint)
LCP (Largest Contentful Paint) measures how long it takes for the largest visible element on a page to load. Learn what LCP means, how it affects AI SEO, and how to optimize it.
What Is a Knowledge Graph? Definition and Role in AI Search
A Knowledge Graph is a database of entities and their relationships used by search engines and AI models to understand the real world. Learn what it is, how it works, and how it affects AI visibility.
What Is JSON-LD? Definition and Why It Matters for AI SEO
JSON-LD (JavaScript Object Notation for Linked Data) is a format for embedding structured data in web pages. Learn what JSON-LD is, how it works, and why AI models rely on it to understand your content.
INP (Interaction to Next Paint)
INP (Interaction to Next Paint) measures how quickly a page responds to user interactions. Learn what INP means, how it replaced FID as a Core Web Vital, and why it matters for AI SEO.
Information Gain
Information gain measures how much new, unique information a piece of content adds beyond what is already available on other pages. Learn the definition, why AI models prioritize it, and how to create content with high information gain.
Inference
Inference is the process of an AI model generating output from input — the moment it produces an answer to your question. Learn what inference means, how it works, and why it matters for AI SEO.
What Is IndexNow? Definition and How It Works
IndexNow is an instant indexing protocol that lets websites notify search engines about content changes in real time, replacing the traditional crawl-and-wait model.
What Is Hreflang? Definition and Why It Matters for International SEO
Hreflang is an HTML attribute that tells search engines which language and regional version of a page to show to users. Learn what hreflang is, how it works, and its importance for multilingual SEO and AI visibility.
What Is Grounding (AI)? Definition and Why It Matters for AI SEO
Grounding in AI refers to connecting a language model's output to verifiable, real-world sources. Learn what grounding means, how it works, and why it determines whether AI cites your website.
What Is Grok (xAI)? Definition and How It Works
Grok is an AI assistant built by xAI (Elon Musk's AI company) that has real-time access to X/Twitter data, offering a unique AI search experience with live social media context.
What Is GPTBot? OpenAI's Web Crawler Explained
GPTBot is OpenAI's web crawler used for training data collection. Learn what GPTBot does, how it differs from OAI-SearchBot, and how to control its access to your site.
What Is Googlebot? Definition and How It Works
Googlebot is Google's web crawling system that discovers and indexes web pages for Google Search -- and feeds the index that powers Google Gemini and AI Mode responses.
What Is Google Search Console? Definition and How It Works
Google Search Console is a free tool from Google that lets website owners monitor their site's presence in Google Search, fix indexing issues, and understand how Google sees their content.
What Is Google Gemini? Google's AI Model Explained for AI SEO
Google Gemini is Google's multimodal AI model that powers AI Overviews, AI Mode, and the Gemini chatbot. Learn how it works, why it matters for AI SEO, and how to optimize for it.
What Is Google-Extended? Google's AI Training Bot Explained
Google-Extended is Google's user-agent for controlling whether your content is used to train Gemini and other Google AI models. Learn how it works and how to configure it in robots.txt.
GEO (Generative Engine Optimization)
GEO (Generative Engine Optimization) is the practice of optimizing content to appear in AI-generated responses from tools like ChatGPT and Gemini. Learn the definition, how it works, and its relationship to AI SEO.
Fine-Tuning
Fine-tuning is the process of customizing a pre-trained AI model on specialized data to improve its performance for specific tasks. Learn what fine-tuning means and why it matters for AI SEO.
What Is Entity Recognition? Definition and Why AI Search Depends on It
Entity recognition is the AI process of identifying and classifying named entities (people, organizations, locations, products) in text. Learn how it works and why it determines AI visibility.
Embedding
An embedding is a vector representation of text that captures its meaning as numbers. Learn what embeddings are, how they power AI search retrieval, and why they matter for AI SEO.
E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness)
E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness — Google's quality framework that increasingly influences how AI models evaluate and select content sources. Learn the definition and why it matters for AI SEO.
What Is Domain Authority? Definition and Why It Matters for SEO
Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how likely a website is to rank in search results. Learn what DA is, how it works, and its relevance in the AI era.
What Is DeepSeek? Definition and How It Works
DeepSeek is a Chinese AI company that develops open-weight large language models, gaining attention for achieving competitive performance with smaller, more efficient architectures.
What Is Crawl Budget? Definition and Why It Matters for AI SEO
Crawl budget is the number of pages a search engine or AI crawler will fetch from your site within a given time frame. Learn what crawl budget is, how it works, and why it matters for AI visibility.
What Are Core Web Vitals? Definition and Why They Matter for AI SEO
Core Web Vitals are a set of Google metrics measuring real-world user experience — loading speed, interactivity, and visual stability. Learn what they are, how they work, and their impact on AI SEO.
CLS (Cumulative Layout Shift)
CLS (Cumulative Layout Shift) measures visual stability — how much page content moves unexpectedly during loading. Learn what CLS means, how it relates to AI SEO, and how to fix it.
What Is ClaudeBot? Anthropic's Web Crawler Explained
ClaudeBot is Anthropic's web crawler used to collect training data for Claude AI models. Learn what ClaudeBot does, how to manage it in robots.txt, and its impact on AI visibility.
What Is Claude (Anthropic)? Definition and How It Works
Claude is an AI assistant developed by Anthropic that emphasizes safety, accuracy, and thoughtful responses -- with growing influence through Apple Safari integration and enterprise adoption.
What Is ChatGPT? OpenAI's AI Assistant Explained for AI SEO
ChatGPT is OpenAI's AI assistant that generates conversational answers using web sources. Learn how ChatGPT works, why it matters for AI SEO, and how to get your site cited.
What Is a Canonical URL? Definition and Why It Matters for SEO
A canonical URL is the preferred version of a web page that search engines should index when duplicate or similar content exists. Learn what canonical URLs are, how they work, and their impact on SEO.
What Is BLUF (Bottom Line Up Front)? Definition and Why AI Prefers It
BLUF (Bottom Line Up Front) is a communication principle that places the most important information at the beginning. Learn why AI models cite BLUF-structured content more often.
What Is Bingbot? Definition and How It Works
Bingbot is Microsoft's web crawler that discovers and indexes pages for Bing Search -- and builds the index that powers Microsoft Copilot and ChatGPT's web browsing feature.
What Is Bing Webmaster Tools? Definition and How It Works
Bing Webmaster Tools is Microsoft's free platform for website owners to monitor and optimize their site's presence in Bing Search -- and by extension, in Microsoft Copilot and ChatGPT.
What Is a Backlink? Definition and Why It Matters for SEO and AI Visibility
A backlink is a link from one website to another. Learn what backlinks are, how they work as a ranking signal, and why they influence both traditional SEO and AI-generated citations.
What Is AI Visibility Score? Definition and How It Works
AI Visibility Score is a 0-100 metric that measures how visible and citable your website is across AI platforms like ChatGPT, Gemini, Perplexity, and Copilot.
AI SEO
AI SEO is the practice of optimizing websites and content to appear in AI-generated answers from ChatGPT, Gemini, Perplexity, and other AI search tools. Learn the definition and key concepts.
What Are AI Overviews and AI Mode? Google's AI Search Features Explained
AI Overviews and AI Mode are Google Search features powered by Gemini that generate AI summaries and conversational answers. Learn how they work, how they select sources, and how to optimize for them.
Hallucination (AI)
An AI hallucination occurs when an AI model generates false, fabricated, or inaccurate information that sounds convincing. Learn what causes hallucinations, why they matter for AI SEO, and how to reduce them.
AI Crawling
AI crawling is the process by which AI-powered bots visit, fetch, and index web pages to feed content into large language models and AI search systems. Learn what AI crawlers are, how they differ from traditional crawlers, and how to manage them.
What Is AI Citation Rate? Definition and How to Measure It
AI Citation Rate is the percentage of AI-generated responses that cite your website as a source. Learn how to measure, track, and improve your citation rate across ChatGPT, Gemini, and Perplexity.
What Is AI Brand Sentiment? Definition and Why It Matters
AI Brand Sentiment is the tone and accuracy with which AI models describe your brand in their responses. Learn what shapes it, how to measure it, and how to influence it.
AI Agent
An AI agent is an autonomous AI system that can plan, use tools, and take actions to accomplish goals. Learn what AI agents are, how they search the web, and why they matter for AI SEO.
AEO (Answer Engine Optimization)
AEO (Answer Engine Optimization) is the practice of optimizing content to appear as direct answers in AI-powered answer engines like Perplexity, Google AI Mode, and ChatGPT. Learn the definition, techniques, and how it fits into AI SEO.