Answer Engine Optimization (AEO) is the practice of structuring content so search engines surface it as a direct answer: featured snippets, People Also Ask, Knowledge Panels, and voice responses.
Generative Engine Optimization (GEO) is the newer layer: ensuring content is cited inside AI-generated summaries by tools like Google AI Overviews, Perplexity, ChatGPT Search, and Bing Copilot.
Both build on solid technical SEO. If a site cannot be crawled and indexed, neither AEO nor GEO work. The difference is in how content is structured, what schema markup is applied, and how topical authority is established across a domain.