TLDR
SEO optimizes for Google search results. AEO optimizes for AI answer engines (ChatGPT, Perplexity). GEO optimizes for generative AI specifically. In practice, all three rely on the same signals: organic rankings, content structure, and domain authority. One strategy handles all three.
Definitions
What is SEO?
SEO (Search Engine Optimization) is the practice of optimizing websites and content to rank higher in search engine results pages (SERPs), primarily Google. SEO includes keyword research, on-page optimization, technical optimization, content production, and link building.
What is AEO?
AEO (Answer Engine Optimization) is the practice of optimizing content so that AI-powered answer engines can find, extract, and cite it. Answer engines include ChatGPT, Perplexity, Claude, and Google AI Overviews. For a deep dive, read our complete guide to answer engine optimization.
What is GEO?
GEO (Generative Engine Optimization) is the practice of optimizing content specifically for generative AI platforms. GEO focuses on how AI language models retrieve, process, and present information from your content. The term was coined in academic research from Princeton, Georgia Tech, IIT Delhi, and the Allen Institute for AI.
How they compare
The key differences and overlaps:
- SEO targets Google’s search results. The output is a ranked list of links on a search results page.
- AEO targets AI answer engines. The output is a generated answer that cites specific sources.
- GEO targets generative AI broadly. The output is AI-generated content that references or recommends sources.
What they all share:
- All rely on organic rankings. AI platforms pull sources from Google’s index or similar web indexes. Without rankings, your content is invisible to all three.
- All reward structured content. Clear headings, direct answers, schema markup, and logical content architecture perform well across Google, answer engines, and generative AI.
- All weight domain authority. Backlinks from credible publications improve rankings and AI citation likelihood equally.
Why you do not need three strategies
The marketing industry has created three acronyms for what is functionally one practice: building search visibility through content, structure, and authority.
The practical overlap is near-total:
- Content that ranks well in Google gets cited by ChatGPT and Perplexity
- Structured content that wins featured snippets is the same content AI platforms extract for citations
- DR50+ backlinks that improve Google rankings also improve AI citation likelihood
- Schema markup that helps Google understand your content helps AI platforms understand it too
The only genuinely new element is the monitoring layer: tracking what AI platforms say about your category and whether your brand appears. This is additive to SEO, not a separate discipline requiring a separate team and separate budget.
What to actually do
- Build organic visibility first. Keyword research, content production, technical SEO. Rankings are the prerequisite for everything else.
- Structure content for extraction. Question-based headings, direct answers, entity definitions, comparison content, schema markup.
- Build authority. DR50+ editorial backlinks from publications AI platforms reference.
- Monitor AI citations. Track what ChatGPT, Perplexity, and Google AI say about your category monthly.
- Iterate based on data. When citations change, analyze what caused it and adjust.
This is one strategy with one set of tactics that serves all three acronyms. The labels are different. The work is the same.
One strategy for Google, ChatGPT, and every AI platform
We build search visibility across all of them. Tell us your goals.
Get started →Frequently asked questions
Which is more important: SEO, AEO, or GEO?
SEO is the foundation. Without organic rankings, AI platforms cannot find your content to cite it. AEO and GEO are extensions of strong SEO, not alternatives to it.
Should I hire separate agencies for SEO and AEO?
No. The work is the same. Hiring separate agencies creates coordination problems and duplicate costs. One agency or team that understands how organic visibility and AI citations connect will produce better results for less money.
Is GEO just a different name for AEO?
Almost. AEO focuses on answer engines (which include non-generative systems like featured snippets). GEO focuses specifically on generative AI. In practice, the optimization tactics for both are identical.
Will SEO become irrelevant because of AI search?
No. AI search platforms rely on organic search indexes to find sources. If anything, SEO becomes more important because it is the prerequisite for AI visibility. The brands that rank well in Google are the brands that get cited by AI.