SEO. SEO improves discoverability and ranking across search engines through technical quality, relevance, authority and experience.
AEO.
Answer Engine Optimization focuses on making direct answers easy to extract for featured snippets, assistants and question-led search experiences.
SEO, GEO and AEO overlap heavily. The useful distinction is what surface you are optimizing for and how the answer is retrieved.
GEO.
GEO extends the idea toward generative systems that synthesize information from multiple sources and may cite or recommend brands.
One system, not three silos.
Treat them as layers of the same information strategy: technically accessible, genuinely useful, clearly structured and trustworthy.