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GEO Fundamentals

Generative engine optimisation is the work of making a brand retrievable, quotable and named when AI assistants answer buying questions. This cluster covers the fundamentals: how retrieval selects sources, how answers cite them, which page structures survive extraction, and which widely sold tactics fail the moment somebody measures them properly.

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GEO Fundamentals

GEO Fundamentals: where to start

Generative Engine Optimization: A Complete Guide

Start hereUpdated 1 October 2026

Generative Engine Optimization (GEO) is the practice of making a brand and its pages retrievable, quotable and recommendable by generative engines such as ChatGPT, Google AI Overviews, Perplexity, Claude, Gemini and Grok. It extends SEO: the same crawlable, well-structured content, written and organised so generative AI systems can extract it and name you.

  1. Block AI Crawlers at Cloudflare, Lose Googlebot

    Since 15 September 2026, Block on Cloudflare's AI training control also stops Googlebot, Applebot and Bingbot. The setting that keeps search, and what migrated.

    Updated 1 October 2026

  2. AI Citations: How LLMs Choose Sources to Cite

    AI citations are the sources an assistant links when it answers. What the measured evidence says about how LLMs choose them, and what fails when tested.

    Updated 1 October 2026

  3. What Is Online Reputation Management (ORM)?

    What online reputation management is, how ORM differs from SEO, and how AI assistants now build a brand's reputation out of sources you do not own.

    Updated 1 October 2026

  4. What Is Answer Engine Optimization (AEO)?

    What answer engine optimisation means, how answer engines select sources, the answer-first structure with controlled-test evidence, and the AEO mistakes to avoid.

    Updated 1 October 2026

  5. GEO vs SEO vs AEO: What's the Difference?

    GEO vs SEO vs AEO in one comparison: the key differences, whether GEO replaces SEO, what each earns you, and the order marketers should prioritise them in.

    Updated 1 October 2026

  6. Query Fan-Out: One Prompt, Twenty Searches

    How query fan-out turns one prompt into many synthetic searches, what it means for SEO and topic clusters, and how to cover the sub-query space.

    Updated 1 October 2026

  7. How AI Crawlers Read Your Site

    Which AI crawlers exist, their user agents, what they fetch, which of them run JavaScript and which do not, and how to verify your pages are reachable.

    Updated 1 October 2026

  8. What Is llms.txt, and Do You Need One?

    What the llms.txt file is, what the server-log evidence says about who reads it, why we publish one anyway, and how to create yours in a minute.

    Updated 1 October 2026

GEO Fundamentals is one topic on the RankX AI blog. Related topics: AI Visibility Measurement and WordPress and CMS.