SEO gets your pages ranked in search results. AEO gets your content chosen as the direct answer. GEO gets your brand mentioned and cited in AI-generated answers. They target three places a customer can find you: the list of links, the answer box, and the answer an AI assistant writes. The work overlaps a lot. AEO and GEO both depend on SEO, because AI answers are mostly built from pages that search engines can find and trust.
SEO vs AEO vs GEO at a glance
| SEO | AEO | GEO | |
|---|---|---|---|
| Stands for | Search engine optimization | Answer engine optimization | Generative engine optimization |
| Goal | Rank your page in the results | Be the direct answer | Be mentioned and cited in AI-written answers |
| Where | Google and Bing results pages | Featured snippets, People Also Ask, voice assistants, AI answers | ChatGPT, Perplexity, Claude, Gemini, Google AI Overviews and AI Mode |
| What you win | A click from a ranked link | Your text shown as the answer, often with a link | Your brand named in the answer, your page linked as a source |
| Main metric | Rankings, clicks, organic traffic | Share of answer boxes and answers won | Mention rate, citation rate, share of voice in AI answers |
| Measured with | Search Console, rank trackers | SERP feature tracking, answer checks | AI visibility tracking across engines |
What is SEO?
Search engine optimization is the work of getting your pages to rank in search engines' organic results. It covers three things: technical health (pages can be crawled, indexed and load well), relevance (content matches what people search for) and authority (other sites link to and reference you). Success is a higher position for the searches your customers make, and the clicks that follow.
It's also the foundation for the other two, as the sections below show.
What is AEO?
Answer engine optimization is the work of getting your content chosen as the answer rather than one link among many. The term took hold around 2018, when Search Engine Watch described it as optimizing for voice search and featured snippets; marketer Jason Barnard says he coined it in 2017. Voice assistants and answer boxes read out a single answer. AI assistants turned that into a much bigger surface: every question to ChatGPT or Perplexity now gets one written answer, and today AEO usually means showing up in those.
AEO work is mostly about format and clarity:
- Put a direct, one-to-three-sentence answer right under the question it answers.
- Phrase headings as the questions people actually ask.
- Use lists for steps and tables for comparisons.
- Mark up pages with structured data that matches what's visible on the page.
Our answer engine optimization guide covers how answer engines choose their sources.
What is GEO?
Generative engine optimization is the work of getting your brand mentioned, recommended and cited in answers written by generative AI.
The term comes from a research paper, GEO: Generative Engine Optimization, by researchers at Princeton and IIT Delhi, first published in November 2023 and accepted to KDD 2024. Testing 10,000 queries, the authors found that adding cited sources, quotations and statistics to a page raised its visibility in generative engine answers by up to 40%, while keyword stuffing did little or nothing.
GEO goes beyond formatting. An AI assistant decides which brands to name from what it learned in training and from the pages it retrieves when it searches. So GEO includes:
- Letting AI search crawlers reach your site (see the AI crawler list).
- Earning mentions on the third-party pages assistants cite: reviews, comparison articles, YouTube videos, Reddit threads.
- Keeping facts about your brand, such as name, category, prices and features, consistent everywhere.
- Publishing original data that gives engines a reason to cite you.
- Measuring how often each engine mentions and cites you, which is your AI visibility.
AEO vs SEO: what's the difference?
SEO asks "does my page rank?" AEO asks "is my content the answer?" A page can rank third and still win the featured snippet, or rank first and lose the answer to a competitor whose page states it more clearly. In practice, AEO is a layer on top of SEO: you can't be chosen as the answer from a page search engines haven't indexed.
| SEO | AEO | |
|---|---|---|
| Unit | A ranked page | An extracted answer |
| Focus | Relevance, authority, technical health | Directness, structure, question coverage |
| Typical change | Improve a page's content and links | Rewrite the first paragraph under a question heading as a clear answer |
AEO vs GEO: are they the same thing?
Mostly, and many people use the terms interchangeably. The difference is scope:
- AEO is older and broader in format. It covers any single-answer surface, including featured snippets and voice assistants that don't generate text.
- GEO is specific to generative AI. It deals with things AEO never had to: how models describe your brand from training data, which third-party sources they trust, and how often they recommend you over a competitor.
If your goal is showing up in ChatGPT, Perplexity and Google AI Overviews, you're doing both. Clear answers (AEO) make your pages easy to cite. Brand mentions across the web (GEO) make the engines want to.
GEO vs SEO
GEO optimizes for being named in an AI answer; SEO optimizes for ranking in a list of links. Our lesson on GEO vs SEO covers how the shift changes your strategy in detail.
Where all three overlap
Google's own guidance says so directly. It says specific optimization isn't required for AI Overviews and AI Mode, and the same SEO best practices apply. To appear as a link in them, a page has to be indexed and eligible to show with a snippet. Since August 2026, the site also has to be included in Search Console's "Search generative AI" setting, which is on by default (Google Search Console Help).
Ranking and being cited are related, not identical. Ahrefs found that 37.9% of URLs cited in AI Overviews also appeared in the top 10 results for the same search (March 2026, 863,000 keywords). SEO gets you into the pool of pages AI answers draw from; AEO and GEO influence whether you're picked.
The shared foundation looks like this:
- Crawlable and indexed pages. Nothing gets ranked, extracted or cited if engines can't reach it. For ChatGPT search, OpenAI recommends allowing OAI-SearchBot in robots.txt.
- Content that answers real questions clearly and completely.
- Authority: links and mentions from sites people trust.
- Accurate, consistent facts about your brand.
- Freshness on pages where the answer changes, such as prices, comparisons and statistics.
How to do SEO, AEO and GEO in one workflow
- Start from questions, not just keywords. List the questions buyers ask, including the long, conversational ones people type into AI assistants.
- Build one strong page per question cluster. Open with the direct answer, then go deep: tables, steps, examples, sources.
- Get the technical basics right. Indexable pages, fast load times, structured data that matches the page, and robots.txt rules that allow AI search crawlers.
- Earn mentions where AI engines look. Reviews, comparison articles, videos and community threads in your category.
- Measure all three. Search Console for SEO, answer-box and AI-answer checks for AEO, and mention and citation tracking across AI engines for GEO.
How to measure each
| What to track | Where | |
|---|---|---|
| SEO | Impressions, clicks, average position, indexed pages | Google Search Console, Bing Webmaster Tools, rank trackers |
| AEO | Featured snippets and People Also Ask boxes won, whether AI answers use your wording | SERP feature tracking, manual checks |
| GEO | Mention rate, citation rate, position in the answer, sentiment, share of voice | AI visibility tools or an AI visibility audit |
FAQ
Is AEO replacing SEO?
No. AEO and GEO build on SEO rather than replacing it. AI answers are largely assembled from pages search engines have indexed, so a page with no search visibility rarely gets cited.
Is GEO the same as AEO?
They overlap heavily and are often used as synonyms. AEO covers any direct-answer surface, including featured snippets and voice assistants. GEO focuses on generative AI answers and adds brand-level work, like earning third-party mentions and keeping your facts consistent.
Which should I start with?
SEO basics first: make sure your key pages are indexed and rank for the questions your buyers ask. Then add AEO formatting to those pages, and GEO work, such as third-party mentions and AI visibility tracking, once the foundation is there.
Do I need different content for each?
Usually not. One well-structured page can rank (SEO), supply the direct answer (AEO) and be cited in AI answers (GEO). What changes is how you format it and where else your brand is mentioned.
Sources
- Google Search Central, AI features and your website, last updated 10 December 2025, and Optimizing your website for generative AI features, last updated 10 July 2026.
- Google Search Console Help, Search generative AI setting, rolled out worldwide 31 August 2026.
- Aggarwal et al., GEO: Generative Engine Optimization, arXiv 2311.09735, KDD 2024.
- Search Engine Watch, The rise of answer engine optimization, 7 February 2018.
- Ahrefs, AI Overview citations and the top 10, 2 March 2026.
- OpenAI, Overview of OpenAI crawlers.
