Answer Engine Optimization (AEO) is the practice of structuring your content, data, and public online presence so that AI systems — chat assistants, voice assistants, and AI-powered search features — select your business as the direct answer to a question, rather than merely listing you as one option among many.
The term exists because the interface changed. A search engine returns a ranked list and lets the human do the comparing. An answer engine — ChatGPT with browsing, Perplexity, Google's AI Overviews, Bing Copilot, voice assistants — reads across many sources and hands the human one synthesized answer, usually with a short list of citations underneath it. If a user asks "what's the best-rated dentist in Walnut Creek," the answer engine doesn't show them ten links to click through. It says a name, maybe two, and moves on.
That is a much higher-stakes moment than a page-three search ranking. You're not competing to be seen among ten options — you're competing to be one of the one-to-three businesses a model decides to name out loud. AEO is the set of practices — clear, factual, well-structured content; consistent facts across the web; explicit answers to the exact questions people ask — that make it easier for a model to select and cite you with confidence.