What is AEO (answer engine optimisation)? A plain guide for website owners

By the SEOCells team, OmCells R&D Labs LLP · Published 1 November 2026

AEO, short for answer engine optimisation (also spelled optimization), is the work of making a website easy for AI assistants to find, trust and quote. Answer engines such as ChatGPT, Gemini, Perplexity and Google AI Overviews reply to a question directly and name a few sources. AEO aims to make your pages one of them.

What counts as an answer engine?

An answer engine is any service that replies to a question with a written answer instead of only a list of links. Today that includes AI assistants such as ChatGPT, Gemini, Claude, Microsoft Copilot and Perplexity, and the AI features inside Google Search: AI Overviews at the top of the results page and the conversational AI Mode.

Voice assistants and featured snippets were the first answer engines; the term AEO dates from that era. What changed with AI assistants is scale: an answer can now combine several sources, and it often names or links them. Being one of those named sources is the goal of AEO.

How do AI answers choose their sources?

The details differ by product and are not published in full, but the broad steps are similar. The assistant turns the question into one or more searches, retrieves candidate pages from a search index, reads the most promising passages, writes the answer and cites the pages it relied on. Google says its AI Overviews and AI Mode surface links from its normal Search index, and that the usual SEO best practices apply.

That gives a practical rule: a page can only be cited if it can be crawled and indexed, if it is retrieved for the question, and if a passage on it answers the question clearly enough to be quoted. AEO work targets each of those steps.

How is AEO different from SEO?

SEO (search engine optimisation) aims for a high position in a list of results, measured by rankings and clicks. AEO aims to be quoted or named inside an answer, measured by how often and where answers cite you. The foundations are shared: a crawlable site, helpful content and a trustworthy business. AEO adds emphasis on short, self-contained answers, clear facts, consistent business details and being mentioned on other respected sites.

SEO and AEO side by side
	SEO	AEO
The result you want	A high position in search results	A citation or mention inside an AI answer
Where it happens	Google and Bing results pages	ChatGPT, Gemini, Perplexity, Copilot, Google AI Overviews and AI Mode
What you measure	Rankings, impressions, clicks	Citation rate, position among sources, brand mentions, visits from AI assistants
Content that helps	Pages that fully match the search	Pages whose passages answer one question each, plainly
Shared base	Crawlable, fast, helpful, trustworthy pages	The same

Is AEO better than SEO?

No — AEO is not a replacement. Google states there are no additional requirements to appear in AI Overviews or AI Mode beyond the fundamentals of SEO. Other assistants also rely on search indexes. A site that is weak at SEO is usually weak at AEO too. Think of AEO as SEO with extra attention to how your pages read when a machine lifts one paragraph out of them.

How do you do AEO on a website?

Let search and AI crawlers read the site: check robots.txt, and make sure the main text appears without running scripts.
List the real questions customers ask before buying — about price, comparison, suitability, location and trust.
Give each important question a heading in the customer's words and answer it in the first two or three sentences below.
Name things: your business, product, place and numbers, instead of “we”, “it” or “this”.
Add structured data (schema.org) for your organisation, the page, its author and dates, and products or services.
Keep your business name, address and phone identical on the site, in the markup and on every profile.
Earn mentions on independent sites people trust: trade bodies, local press, directories and review platforms.
Measure: ask the assistants your customers' questions repeatedly and record who is cited; track visits from AI assistants.

How long does AEO take to show results?

Technical fixes — unblocking a crawler, fixing markup — can be picked up as soon as the page is crawled again, which for most sites means days to weeks. Changes that depend on reputation, such as being mentioned on other sites, usually take months. AI answers also vary from one run to the next, so a single check proves little; compare repeated samples over time, with a range around each figure.

How does SEOCells help with AEO?

The free SEOCells AEO Score reads one page and checks how ready it is to be found, trusted and quoted by AI answers. The AEO Report goes further: it asks AI answers your customers' questions several times each, shows where you are cited and who is cited instead, scores five areas with ranges and gives a prioritised fix plan. SEOCells never changes your site by itself; you, or a SEOCells consultant, make the changes you approve.

Questions answered

What does AEO stand for?

AEO stands for answer engine optimisation (or optimization): making a website easy for AI assistants and AI search features to find, trust and quote in their answers.

Do I still need SEO if I do AEO?

Yes. Google says its AI features rely on the same Search index and best practices, and other assistants use search indexes too. AEO builds on SEO rather than replacing it.

Can AEO guarantee that ChatGPT will mention my business?

No. Nobody controls which sources an AI assistant cites, and answers vary between runs. AEO improves the odds and makes your pages easier to quote; results should be measured, not promised.

Sources

Search engines and AI assistants change often; check the linked documentation for the latest details. Nothing in this guide is a promise of rankings, citations or results.

See how ready one of your pages is for AI answers — the first AEO Score is free.

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