They're three names for overlapping work. SEO (search engine optimization) gets your website ranking in Google's list of results. AEO (answer engine optimization) gets your business chosen as the direct answer, in places like Google's AI Overviews, featured snippets and voice search. GEO (generative engine optimization) gets your business mentioned and cited when tools like ChatGPT, Perplexity and Gemini write their answers.
All three run on the same foundation: a clear, well-structured website, genuinely helpful content, and a reputation that other trusted sites back up. That's why we plan AI search as an extension of your SEO, not a separate project.