SEO optimizes for rankings in search engines. GEO (generative engine optimization) and AEO (answer engine optimization) optimize to be cited and recommended inside AI answers. All three sit on the same technical and authority foundations, which is why the smartest approach is not to choose between them but to run them as one system.
The one-line definitions
- SEO: Search Engine Optimization. Get your pages to rank in Google and Bing results.
- GEO: Generative Engine Optimization. Get your brand cited and recommended inside generative AI answers (ChatGPT, Perplexity, Gemini, Google AI Overviews).
- AEO: Answer Engine Optimization. The same goal, framed around answer engines: AI Overviews, voice assistants, and featured snippets.
GEO and AEO are close enough that practitioners often use them interchangeably. The useful distinction is not between the two acronyms; it is between optimizing for a list of links and optimizing for a synthesized answer.
Where they differ
- What success looks like: SEO counts rankings, clicks, and traffic. GEO and AEO count citations, brand mentions, and recommendation rate inside answers.
- How buyers search: short keywords in Google, long conversational questions in AI.
- The output: SEO competes for a position on a page; GEO and AEO compete to be quoted in a paragraph the buyer reads instead of the page.
Where they are the same
This is the part most "AI search" pitches skip. AI engines do not recommend brands at random. They lean on the same signals great SEO has always built: crawlable, well-structured content; clear entities and schema; and authoritative third-party sources, directories, and reviews that a model can cite. There are no AI-only magic files. Clean SEO is the floor that GEO and AEO stand on.
So what: if a vendor sells you "GEO" with no technical SEO or authority work underneath, they are selling you a roof with no house.
How to run all three together
We treat it as one engine with five pillars: search foundation, entity clarity, evidence architecture, citation authority, and AI visibility tracking. The same content and authority work that earns a Google ranking also earns an AI citation, when it is structured for both. The only added step is measurement: tracking mention and recommendation rate across AI engines, run repeatedly, so you can see what is actually working.