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Definition

Answer Engine Optimization

Also known as: AEO

Answer Engine Optimization (AEO) is the practice of structuring web content so that systems which return a direct answer — AI assistants, AI-powered search and voice assistants — can retrieve, understand and cite it. It prioritises self-contained answer passages, clear entities, verifiable authorship and machine-readable formats over ranking position.

AEO treats the passage, not the page, as the unit of optimisation. An answer engine splits pages into chunks, scores the chunks against a question, and quotes or cites the ones that resolve it on their own.

The practical consequences are a small number of structural habits: put a 40–70 word direct answer at the top of every page; give each question its own URL; name entities explicitly; show a named author, dates and sources; emit schema.org markup from the same fields as the visible text; and serve the content as clean HTML and Markdown.

Frequently asked questions

Who coined the term Answer Engine Optimization?

The term has no single origin. It emerged in the SEO industry around 2017–2019 to describe optimising for featured snippets and voice assistants, and was widely adopted for AI assistants after ChatGPT's release in late 2022.

Related terms

Guides that use this term

  • Fundamentals

    What is Answer Engine Optimization (AEO)?

    Answer Engine Optimization (AEO) is the practice of structuring content so that AI-powered answer engines — ChatGPT, Perplexity, Claude, Copilot and Google's AI Overviews — can retrieve it, understand it and cite it inside a generated answer. Where classic SEO competes for a ranking position, AEO competes for extraction: a self-contained passage that resolves one question, from a page with a clear author, date and sources.

    6 min read

  • Fundamentals

    GEO vs SEO vs AEO: what actually changed

    Search Engine Optimization (SEO), Answer Engine Optimization (AEO) and Generative Engine Optimization (GEO) describe three stages of the same job. SEO optimises a page to rank in a list. AEO optimises a passage to be extracted as a direct answer. GEO, from a 2023 paper, optimises a source to be cited inside an answer written by a language model. Crawlability and quality carry over; the unit, reward and pipeline change.

    8 min read