SEO vs AEO vs GEO: What's the Difference and What Do You Need?
April 1, 2026
Last updated: April 2026 | Editor: Krister Ross, CitationLab AS
Three acronyms, one field, infinite confusion. SEO, AEO, and GEO keep showing up interchangeably — and many people use them as synonyms. They are not.
The definitions
SEO (Search Engine Optimization) is optimization for high organic ranking in search result lists — primarily Google.
AEO (Answer Engine Optimization) is optimization for being chosen as the answer by AI-driven answer engines like ChatGPT, Gemini, and Perplexity.
GEO (Generative Engine Optimization) is the broadest term: optimization for being included in answers generated by generative AI models.
The comparison table
| Dimension | SEO | AEO | GEO |
|---|---|---|---|
| Primary goal | Ranking in search lists | Being the answer in AI answers | Inclusion in generative AI |
| Primary platform | Google, Bing | ChatGPT, Perplexity, Gemini | All generative AI systems |
| Most important factor | Link authority + relevance | Answerability + EEAT | Content quality + presence |
| Schema usage | Some (rich results) | Critical (FAQ, HowTo, Article) | Critical (all types) |
| Time horizon | 3–6 months | 2–6 months | 2–12 months |
The recommendation: Go AEO-first
In 2026, our recommendation is to build an AEO-first strategy, with SEO as a complementary layer. A piece of content designed for AEO will typically also do well in SEO. But an SEO-first piece is not necessarily citable by AI.
FAQ
Do I need separate strategies for SEO and AEO? No, but you need a single integrated framework. A good framework like CAVIS integrates all three dimensions.
Are GEO and AEO the same thing? Almost. GEO is the broader term, while AEO is more specifically targeted at AI answer engines.
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