Answer engine optimization (AEO) is the practice of shaping content so that AI-powered answer engines — ChatGPT, Perplexity, Google's AI Overviews, voice assistants — can pull a clear, direct answer from it and present that answer to the user. Where classic SEO competes for a click on a ranked link, AEO competes to be the answer the engine states, often without the user visiting the page at all.
In practice AEO overlaps heavily with generative engine optimization; the difference is one of emphasis. AEO foregrounds the mechanics of extractability: a question phrased as a heading, the answer in the first sentence beneath it, definitions and steps in clean lists, and factual claims a model can lift verbatim. Content built this way is easy for an answer engine to quote and attribute, and easy for a reader to act on.
The strategic catch is that being the answer can mean losing the click. A well-optimized answer satisfies the user inside the AI interface, so AEO is measured less by traffic and more by presence: how often your brand is the cited source, whether the answer represents you accurately, and whether that citation drives branded demand later. It rewards being genuinely the clearest, most trustworthy source on a narrow question.