SEO vs AEO vs GEO: What's Actually Different?
These three terms get used almost interchangeably, and that's a mistake, because they optimize for different outcomes and need different work. If a founder is trying to "do SEO" but the actual goal is getting cited by ChatGPT, the tactics won't line up with the goal.
SEO: optimizing for a ranked list of links
Traditional Search Engine Optimization is about getting a page to appear high in a results page a human scans and clicks through. It rewards keyword relevance, backlinks, page speed, and domain authority accumulated over time. The output is a click, and the user still has to read the page themselves to get their answer.
AEO: optimizing to be the cited answer
Answer Engine Optimization is about being the specific fact, quote, or explanation an AI system pulls directly into a generated answer, on Google's AI Overviews, ChatGPT, Perplexity, or similar. The output isn't a click, it's a citation, sometimes with a link, sometimes without one. This rewards structured data (schema.org markup), direct question-and-answer formatting, and specific, falsifiable claims over vague marketing language, because that's what's easiest for a model to extract cleanly.
GEO: optimizing for how generative engines represent you at all
Generative Engine Optimization is the broadest of the three: it's about how a brand, product, or person gets represented, described, and recommended across AI-generated content generally, not just whether one specific page gets cited in one specific answer. This includes things like whether a company is mentioned favorably when someone asks an AI system to compare options in a category, which depends on the sum of everything AI systems have read about that company across the web, not just the company's own site.
Curious how this applies to your own site specifically?
Read how to get found by ChatGPT and Perplexity, or request a free 15-minute consultation.Why a company usually needs all three, done together
A page can rank well on Google (SEO) and still never get quoted by an AI system (poor AEO), if it has no structured data or direct answers. A company can be well-structured for AEO on its own site and still get misrepresented or omitted when an AI system is asked to compare it to competitors (poor GEO), if the broader web doesn't have accurate, consistent information about it. None of the three substitutes for the others, and none of them substitutes for having an actual clear ICP and message to structure in the first place, structure without substance doesn't get cited any more reliably than vague prose does.
This matters more, not less, the more distributed your buyer base is. A founder searching from Singapore, Doha, or Zurich is increasingly starting that search inside an AI answer engine rather than a traditional search bar, so all three, SEO, AEO, and GEO, compound across every region a company is trying to reach, not just its home market.