Terms
LLM SEO
LLM SEO is the practice of making a brand's content easy for large language models to find, understand and cite when they answer questions, in tools such as ChatGPT, Gemini, Perplexity and Copilot.
Generative engine optimisation (GEO)
Generative engine optimisation (GEO) is the practice of improving how often, and how favourably, a brand is cited, named and recommended in answers from AI engines such as ChatGPT, Google AI Overviews, Gemini, Perplexity and Copilot.
Answer engine optimisation (AEO)
Answer engine optimisation (AEO) is the practice of structuring content so search and AI engines can lift it as a direct answer, in featured snippets, AI Overviews, voice assistants and chat answers.
AI Overviews
AI Overviews are AI-generated summaries that Google shows at the top of some search results, with links to the pages used as sources.
llms.txt
llms.txt is a proposed convention for a plain-text Markdown file at the root of a website that summarises the site and lists its most important pages for large language models.
Citation share
Citation share is the percentage of prompts in a fixed prompt set where at least one of a brand's URLs is cited in the AI answer.
Entity SEO
Entity SEO is the practice of making the facts about a brand, its products and its people consistent and well-sourced across a website, structured data, Wikidata, Google's Knowledge Graph and trusted third-party profiles.
Query fan-out
Query fan-out is when an AI search system splits one question into many related searches, retrieves results for each, and combines them into a single answer.
AI crawlers
AI crawlers are the bots AI companies use to fetch web pages, either to build search indexes for AI answers or to collect training data.
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