AEO (Answer Engine Optimization) and GEO (Generative Engine Optimization) describe overlapping work. AEO is the narrower, older term: making individual pages eligible to be used as answers, through clarity, structure, and credibility. GEO is the broader practice: earning citations and recommendations from AI engines, which includes AEO's on-page work plus the off-site citation building where most of the battle happens.
Marketing grew two acronyms for the same shift, and vendors use them interchangeably enough to confuse everyone. The distinction is real but simple, and it maps to the two halves of the work.
AEO: making pages answerable
Answer Engine Optimization predates the LLM era, it grew out of featured snippets and voice search, when “answer engines” meant Google boxes and Alexa. Its concerns are page-level: does this page answer a specific question directly, in a liftable passage, with the structure (headings, lists, FAQ schema) and credibility signals (author, date, sources) that make an engine willing to use it? That discipline transferred intact to AI search; it's what we call the trust layer, and it's roughly the on-page half of any serious program.
GEO: earning the recommendation
Generative Engine Optimization is the wider, newer practice named for generative engines themselves, ChatGPT, Perplexity, Gemini, Google AI Overviews. It contains AEO's on-page work and adds everything those engines actually weigh when they recommend brands: entity clarity across the web, review-platform consensus, community presence, editorial mentions, original research, and freshness, the off-site corroboration that drives roughly 88% of citations. GEO is the strategy; AEO is one of its layers.
Side by side
| AEO | GEO | |
|---|---|---|
| Scope | Page-level answerability | Brand-level AI visibility |
| Era | Featured snippets and voice search, then AI | Native to the LLM era |
| Core work | Answer-first structure, schema, credibility signals | All of AEO, plus entity, reviews, communities, PR, research, freshness |
| Measured by | Whether a page gets used as an answer | Citations and share of voice per engine |
| Analogy | On-page SEO | The whole SEO discipline |
Which term should you use?
Practically: say GEO when you mean the program, AEO when you mean the on-page layer, and don't argue with anyone who swaps them, the engines don't care what you call the work. When you evaluate vendors, ignore the acronym and check the scope: if a “GEO” proposal is all on-page structure with no off-site citation plan, it's AEO wearing a bigger name, and it will plateau exactly where the on-page layer ends. Both terms live in our glossary, and the full picture of how the layers stack is in What is GEO?
Thomas Doyne is the founder of ezgeo.ai and Senior Marketing Manager at CreatorDB, an AI-powered audience-intelligence platform used by global brands and agencies. He has spent years in B2B marketing and growth for AI and data products, and now leads Generative Engine Optimization (GEO) for B2B SaaS, helping companies get recommended by AI search engines like ChatGPT, Perplexity, and Google AI Overviews. He writes about how generative engines decide what to cite, and how brands earn those citations.
Connect on LinkedIn →See if AI recommends you.
Run a free AI-visibility check, or book a strategy call and we’ll walk your category’s prompts together.