Search is no longer only ten blue links. A growing share of queries are answered directly by AI — Google’s AI Overviews, ChatGPT, Perplexity, Copilot — which read the web, synthesise an answer, and cite a handful of sources. Answer engine optimization (AEO) is the practice of making your content the source those engines quote. This guide covers what actually works.
What is answer engine optimization?
AEO is optimising content so AI answer engines can find, understand and cite it. Where classic SEO targets a ranking position, AEO targets a citation — being the source an AI names when it answers a question. The two overlap heavily, but AEO puts more weight on clear, extractable, trustworthy answers.
What actually moves the needle
Research into AI citations points to a consistent set of levers:
- Answer first. Lead with a direct, concise answer to the question — then elaborate. AI engines extract the summary, not the build-up.
- Quotable structure. Short sentences, clear headings, lists and tables. Passage-level clarity is what gets pulled.
- Real evidence. Statistics, data and specifics get cited far more than opinion.
- Question-shaped headings. Headings that match how people actually ask help engines map your content to a query.
- Freshness & trust. Up-to-date pages from credible sources are favoured.
How AEO differs from SEO
You don’t abandon SEO for AEO — the technical foundation (crawlability, structured data, site health) matters for both. But AEO shifts emphasis: from keyword density to answering intent cleanly, from ranking a page to earning a sentence-level citation, and from Google alone to a spread of AI surfaces.
Tip: The fastest AEO win on most pages: move the direct answer to the top. If a reader — or an AI — has to wade through three paragraphs of preamble to find the point, rewrite so the answer comes first.
Don’t forget the machine-readable layer
AEO isn’t only about prose. Structured data helps AI understand your entities, and an llms.txt file gives AI crawlers a curated map of your best content. Both are low-effort signals in an ecosystem that’s still forming.
Frequently asked questions
What is answer engine optimization?
AEO is optimising content so AI answer engines — ChatGPT, Perplexity, AI Overviews — can find, understand and cite it, targeting a citation rather than a ranking position.
Is AEO replacing SEO?
No. AEO builds on SEO. The technical foundation matters for both; AEO adds emphasis on answer-first, extractable, evidence-backed content across AI surfaces.
How do I get cited by ChatGPT or Perplexity?
Answer questions directly and early, use clear extractable structure, back claims with data, and make your content easy for AI crawlers to read — including via structured data and llms.txt.