Answer Engine Optimization (AEO)
Answer engine optimization is the practice of shaping a site’s pages so that systems which reply with an answer rather than a list of links draw that answer from them. It names the same practice this glossary files under generative engine optimization.
One practice, two names
Answer engine optimization grew out of work on featured snippets and voice assistants, where the goal was to be the single passage a system read aloud or boxed at the top of a results page. Generative engine optimization was named in Aggarwal et al., “GEO: Generative Engine Optimization” (KDD 2024), which studied how changes to a source page alter its visibility in answers written by a language model. The engines have since converged: an assistant with retrieval and a search engine with an AI answer at the top are doing the same thing to the same pages. This site uses GEO as its working term and files AEO as the synonym. The GEO entry carries the full mechanism.
What is actually being optimized
Whether a page contains the answer, isolated, where a machine can lift it. That turns out to be the scarce thing. Of 9,483 small-business sites this site audited in September 2026, 61.5% had no question-and-answer content of any kind, and 50.7% had a heading phrased as a question with no answer separated out beneath it. The pages were not short; the median homepage ran 880 words. The words were there and the answer was not. Those are this site’s own figures, from what 9,483 small business websites serve to an AI crawler, and the sample was drawn per metro and trade rather than at random.
A common question
If AEO and GEO name the same practice, why does this site work under one of them?
The two labels came from different places and have since converged on the same work. Answer engine optimization grew out of featured snippets and voice assistants, where the aim was to be the single passage a system read aloud or boxed above the results. Generative engine optimization was named in a KDD 2024 paper studying how changes to a source page alter its visibility in answers written by a language model. An assistant with retrieval and a search engine with an answer on top now act on the same pages, so one term is kept as the working name and the other filed as its synonym.
Related terms
Sources
The term GEO and the mechanism: Aggarwal et al., “GEO: Generative Engine Optimization” (KDD 2024). The audit figures are this site’s own, computed from its audit records; percentages describe the sample.