SEO vs GEO vs AEO: what actually differs
Three acronyms, one overlapping toolkit, and a lot of confused marketing. Here is the honest version - what each discipline optimizes for, where they share work, and the checklist we run on every client site.
Same web, three different podiums
| Dimension | SEO | AEO | GEO |
|---|---|---|---|
| Where you appear | Ranked results list | Snippets, PAA, voice | Inside AI-written answers |
| Core unit | The page | The question + answer | The claim + its source |
| What earns the spot | Crawl, relevance, links, behavior | Concise extractable answers | Quotable specifics, credibility |
| Measurement | Rankings, Search Console clicks | Impressions on answer surfaces | Citation monitoring in AI tools |
| Timeline | Months, compounding | Weeks for technical wins | Emerging, less predictable |
One foundation under all three
The three disciplines are different podiums on the same building. Google says a page needs nothing extra to be used in its AI Overviews and AI Mode beyond being indexed and eligible for a snippet, which is the same bar classic search sets. Skip the foundation and none of the surfaces above it is reachable.
What actually gets a source cited by AI
From our client work and the published research, these are the levers that move.
Quotable sentences
Generative engines lift text close to verbatim. Write the definitional sentence you would want lifted: short, self-contained, no fluff around the fact.
Numbers with sources
Concrete figures outperform adjectives. State the number, its unit, and where it came from - vague claims give an AI nothing to anchor on. In the GEO paper's tests, adding statistics, quotations and citations to sources raised a page's visibility in generated answers by up to about 40%. Keyword stuffing, the old SEO trick, gave little or no gain and did worse than the unchanged page on Perplexity.
Entity consistency
Same business name, address, and facts everywhere - your site, directories, profiles. AI engines reconcile entities across sources before trusting one.
Real answers to real questions
An FAQ that answers what buyers actually ask becomes citation fuel. An FAQ of softball marketing questions gets ignored by humans and machines alike.
Being present where engines read
Citations skew toward sources that are already visible: established pages, structured data, and third-party corroboration. Absence from the readable web is the hardest gap to fix.
Speed and structure
Fast, clean HTML with schema helps every engine parse you. It will not alone win a citation - but it removes the reasons to skip you.
One pass, all three surfaces
The checklist we run:
- Fix crawlability: sitemap, robots, canonicals that match served URLs, no redirect chains on internal links. Check that AI crawlers are not blocked with our free AI Crawler Checker.
- Fix speed: 95+ PageSpeed mobile. Speed also affects crawling: Google raises how fast it crawls a site that responds quickly and reliably, and slows down when the server is slow or returns errors.
- Structure content as answers: each page leads with a direct answer to its core question, then the detail.
- Add schema honestly: Organization, Service, BreadcrumbList, FAQPage - matching visible content, never invisible text. Expect no FAQ rich result: since August 2023 Google shows those only for well-known government and health sites.
- Add quotable specifics: prices or ranges, timelines, named tools, measured outcomes with sources.
- Unify entity data: identical name, address, phone across your site, Google profile, and directories.
- Build corroborating mentions: profiles, listings, and guest content that independently state what you do.
- Monitor citations: periodically ask the major AI assistants your buyer questions and record who gets cited. That is your GEO rank tracker. Clicks from Google's AI Overviews and AI Mode are already counted in Search Console's Performance report, under the Web search type.
Sources
- GEO: Generative Engine Optimization (Aggarwal et al., accepted at KDD 2024), arXiv, v3, Jun 2024
- AI features and your website, Google Search Central, updated Dec 10, 2025
- Changes to HowTo and FAQ rich results, Google Search Central Blog, Aug 8, 2023
- Crawl budget management, Google for Developers
Every number in this guide links to one of these sources or comes from our own work. Read how we research and update guides.
What changed
- : Added sources. The GEO paragraph now gives the paper's measured results; added Google's guidance on AI Overviews and AI Mode, the 2023 limit on FAQ rich results and Google's note on how server speed affects crawling; added the foundation diagram and an FAQ on rich results.