SEO vs AEO vs GEO: What Is the Difference?
SEO aims to rank your pages and earn clicks. AEO aims to make your answer the one that gets quoted. GEO aims to make AI engines name and trust your brand. The three overlap heavily, and Google says optimizing for AI search is still SEO 1. Choose your first focus by goal: clicks, quoted answers or recommendations.
- No standard defines AEO or GEO, so use the three names as goals: be found, be quoted, be recommended.
- Google says the AI work is still SEO. Forrester calls the gap significant but not fundamental.
- All three need the same base: pages that are crawlable, indexed, useful and clearly written.
- Pick a first focus by goal and buyer question, then test with a fixed prompt list. No tactic is a promise.
What is the difference between SEO, AEO and GEO?
They are three names for overlapping goals. SEO (search engine optimization) aims to rank your pages and earn clicks. AEO (answer engine optimization) aims to make your answer the one that gets quoted. GEO (generative engine optimization) aims to make AI engines name your brand and treat it as credible. These are working definitions, not official ones.
No standards body defines them. Wikipedia's entry says there is no consensus definition, and it lists other names such as LLMO, AIO and AI SEO 5. Google's guide goes further and says optimizing for generative AI search is still SEO 1.
So treat the three labels as goals, not separate trades: be found, be quoted, be recommended. The rest of this page shows how to choose between them, what they share and where the evidence is thin.
How do SEO, AEO and GEO compare in one table?
The table uses the working definitions above. Vendors draw the lines in different places, so check any proposal against it and ask which column each task belongs to.
| Question | SEO | AEO | GEO |
|---|---|---|---|
| What is the goal? | Rank pages and earn clicks | Be the answer that gets quoted | Be named and trusted in generated answers |
| What does the buyer type? | Short phrase: 'trophy shop in bengaluru' | Direct question: 'how much does a trophy cost' | Choice question: 'which trophy shop should I use' |
| Where do you appear? | Result links and snippets | Featured snippets, assistant replies, voice answers | AI answers and the sources listed beside them |
| What are the main tasks? | Technical health, useful pages, internal and outside links | Answer-first openings, question headings, facts that are easy to lift | Original facts, named sources, expert authors, reviews, accurate mentions elsewhere |
| What is the first metric? | Rankings, impressions, clicks | Is your sentence quoted, and with what wording? | Are you named, in which position, and with what description? |
| How strong is the evidence? (our assessment) | Decades of practice and Google's own documentation | Google's snippet help and Microsoft's guidance; no controlled test in the sources we read | One simulated-engine paper and search-engine guidelines; thin |
| What is the main risk? | Slow results | A quote without a click | Over-claiming, and tactics that engines treat as manipulation |
How much do SEO, AEO and GEO overlap?
Most of the work is shared, and the shared part comes first. Forrester analyst Nikhil Lai writes that AEO is significantly, but not fundamentally, different from SEO 2. Google adds that a page must be indexed and eligible to show with a snippet to appear in its AI features, and that no new files or special markup are needed 1.
That shared base is the same whichever label you buy. Skip it and the AEO and GEO work has nothing to stand on.
- Pages that bots can crawl and that are indexed.
- Original content that adds something beyond common knowledge. Google says this will likely matter most in the long run 1.
- Clear structure: one idea per section, with headings that match real questions.
- Named authors and honest sourcing, so a reader or a model can check you.
- A way to measure, so you can tell which change helped.
What does each one add that the others do not?
SEO adds the long-proven toolkit: crawlability, page speed, titles, internal links and links from other sites. This is the part with the strongest track record.
AEO adds answer-first structure. The idea is older than chatbots: Google's featured snippets already show a short excerpt that answers a question, and Google says they help voice users 8. Microsoft's Bing team says assistants split pages into pieces and can lift question-and-answer pairs word for word 10.
GEO adds credibility work. Microsoft Advertising's guide describes GEO as making content discoverable, trustworthy and authoritative for generative AI search 3. Bing's own guidelines define GEO as improving eligibility to be grounded in and referenced by AI responses, and they say it does not guarantee citations 4.
How do the three look on one real question?
Take a bookkeeping firm that wants to win the question 'how much does bookkeeping cost for a small business in [city]?'. Each label points to a different task on the same page.
Notice that no task is wasted if the AI engines change. A faster page, a clear price sentence and a named author help a human reader as much as a model.
- SEO job: make sure the page is indexed, loads fast, and is linked from the home page and the service pages. Title it 'Bookkeeping prices for small businesses in [city]'.
- AEO job: open with 'Bookkeeping for a small business in [city] costs [range] a month, depending on [factors]'. Add a three-row table of packages.
- GEO job: name the accountant who wrote the page, link the professional body that lists the firm, and ask satisfied clients to review the firm on the sites buyers use.
- Check: each month, ask the same three prompts in four AI tools and record who is named.
Why do vendors use so many names for the same work?
Because the field is young and each company brands its own version. According to Wikipedia, Profound treats AEO and GEO as the same practice, while Microsoft Advertising uses AEO for AI agents and assistants and GEO for generative AI search 5. Conductor's 2026 report spells out AEO once and never explains GEO 6.
That is why the label tells you little. A vendor who says 'GEO' may mean answer formatting, link building or brand mentions. Ask for a one-line definition and the first three tasks they would do on your site. Our page on GEO vs LLMO untangles a fourth name.
Google also advises caution. It lists AEO and GEO tools that promise gains in AI experiences among the services to think critically about, because third-party tools lack access to Google's internal ranking data 11.
Which one should you start with?
Start with the one that matches your goal, after the shared base is sound. If your pages are not reliably indexed, start with SEO whatever the pitch calls it. For a small business, that usually means fixing indexing first, then rewriting the openings of your five most valuable pages.
The quiz below applies the same logic. These rules are a starting point, and you can run all three in one plan.
- Start with SEO if you need more visits to key pages, or your pages are missing from search results.
- Start with AEO if buyers ask factual questions about price, timing or process, and your answers sit under long introductions.
- Start with GEO if buyers ask which provider to choose or your category is crowded. This is our judgement, not a tested rule.
- Run all three if you have a short list of money pages: fix access, rewrite openings and gather proof in one sprint.
How strong is the evidence behind each label?
SEO has the strongest evidence, AEO is mostly guidance, and GEO rests on thin research. For SEO we have Google's own documentation. For AEO, the sources we opened give guidance from Microsoft and Google, and we did not find a controlled test of answer-first formatting alone.
The best-known GEO study tested content changes in a simulated engine: five Google results fed to GPT-3.5, scored on a 10,000-query benchmark 7. Its abstract reports visibility gains of up to 40% when content added statistics, quotations and cited sources, and keyword stuffing performed poorly 7. It is a useful hint, but it is from 2023 and 2024, and real engines change.
The risk of a quote without a click is real: Pew found clicks on a traditional result fell from 15% to 8% of visits when an AI summary appeared 9. Details are in AI SEO vs traditional SEO. So measure mentions and enquiries, not clicks alone.
How do you run all three without tripling the work?
Run one list of pages and give each page one job from each column. Pick your five most valuable pages. For each, check indexing (SEO), rewrite the opening to give the answer (AEO), and add one original fact with a named source (GEO).
Then track a fixed list of prompts each month. Our guide to building a prompt list shows how, and the free Answer Block Checker tests whether an opening leads with the answer. If you want the two AI labels explained in depth, read AEO vs GEO and AI SEO vs traditional SEO.
Frequently asked questions
Is AEO the same as GEO?
There is no agreed answer. Some firms treat them as one practice, while Microsoft Advertising uses AEO for assistants and agents and GEO for generative AI search 5. A practical split is answers (AEO) versus credibility (GEO). In real work the tasks overlap, so ask any vendor to list the actual tasks instead of relying on the label.
Do I need all three of SEO, AEO and GEO?
You need the shared base, which is SEO: crawlable, indexed, useful pages. Add AEO-style openings next, because they are cheap. Add GEO-style proof where buyers ask for recommendations or the stakes are high. Google says optimizing for AI search is still SEO, so this is one plan, not three 1.
Is SEO still worth doing with AI search growing?
Which of the three has the best evidence?
SEO, by a wide margin, because it has Google's documentation and decades of practice. The main GEO study used a simulated engine and ran in 2023 and 2024 7. For AEO we found guidance but no controlled test. Treat AEO and GEO tactics as experiments you measure, not as promises.
Should I buy an AEO or GEO tool?
Be careful. Google lists AEO and GEO tools that promise gains among services to think critically about, and notes that third-party tools lack its internal ranking data 11. A tool can help you record which prompts name you. It cannot show why. Start with a manual prompt list before you pay for software.
Sources
- Optimizing your website for generative AI features on Google Search · Google Search CentralOpened October 20, 2026. Supports: Optimizing for generative AI search is still SEO and SEO best practices stay relevant; pages must be indexed and snippet-eligible; no new files or special markup needed; unique, non-commodity content will likely matter most in the long run. Page last updated 2026-07-10.
- SEO's Hype-Fueled Move To The Center Of The Marketing Mix · Forrester (Nikhil Lai, 24 November 2025)Opened October 20, 2026. Supports: Answer engine optimization is significantly, but not fundamentally, different from SEO; vendors tend to exaggerate the differences.
- Microsoft Advertising Releases Guide To AEO & GEO · Search Engine Roundtable (Barry Schwartz, 14 January 2026)Opened October 20, 2026. Supports: Microsoft Advertising's guide describes AEO as optimizing content for AI agents and assistants, and GEO as optimizing for generative AI search environments so content is discoverable, trustworthy and authoritative.
- Bing Adds GEO To Official Guidelines, Expands AI Abuse Definitions · Search Engine Journal (Matt G. Southern, 27 February 2026)Opened October 20, 2026. Supports: Bing's guidelines name Generative Engine Optimization and define it by eligibility for grounding and reference in AI responses; they say GEO does not guarantee citations; they also expand rules against artificially engineered language.
- Generative engine optimization · WikipediaOpened October 20, 2026. Supports: Background only: alternative names (AEO, LLMO, AIO, AI SEO); no consensus definition; Profound treats AEO and GEO as the same practice; Microsoft Advertising uses AEO for AI agents and assistants and GEO for generative AI search.
- The 2026 AEO / GEO Benchmarks Report · ConductorOpened October 20, 2026. Supports: The report expands the acronym AEO once; GEO is never expanded or defined. Page last updated 6 July 2026.
- GEO: Generative Engine Optimization (Aggarwal et al., KDD 2024) · arXivOpened October 20, 2026. Supports: Abstract reports visibility gains of up to 40%; main tests used a simulated engine (top five Google results passed to GPT-3.5 turbo) on a 10,000-query benchmark; adding cited sources, quotations and statistics helped and keyword stuffing performed poorly. The paper's table figures were not verified by hand.
- Featured snippets in Google Search · Google Search HelpOpened October 20, 2026. Supports: A featured snippet is a short excerpt from a website that helps answer a question, and Google says snippets are helpful for phone and voice use.
- Google users are less likely to click on links when an AI summary appears in the results · Pew Research Center (22 July 2025)Opened October 20, 2026. Supports: March 2025 browsing data from 900 US adults: a traditional result was clicked in 8% of visits with an AI summary and 15% without. Google only; panel of consenting users.
- Optimizing Your Content for Inclusion in AI Search Answers · Microsoft Advertising Blog (Krishna Madhavan, Microsoft Bing, 8 October 2025)Opened October 20, 2026. Supports: Assistants do not read a page top to bottom but split content into pieces, and can often lift question-and-answer pairs word for word.
- Google Search's Guidance on Third-Party SEO Tools & Advice · Google Search CentralOpened October 20, 2026. Supports: Google flags AEO and GEO tools and services that promise gains for AI experiences as ones to think critically about; third-party tools lack access to Google's internal ranking data and cannot guarantee performance. Page last updated 2026-06-05.