New acronyms appear every time search changes, and SEO vs AEO vs GEO has become a common source of confusion. Some vendors present AEO or GEO as replacements for SEO. In reality, they describe different search experiences that share most of the same foundations.
The three definitions
- SEO (search engine optimization): improving visibility in traditional search results so people click through to your pages.
- AEO (answer engine optimization): structuring content so search features and assistants can present it as the direct answer to a question.
- GEO (generative engine optimization): making your brand and content understandable, credible and citable for AI systems that generate answers.
SEO vs AEO vs GEO: side-by-side comparison
| SEO | AEO | GEO | |
|---|---|---|---|
| Main goal | Rank and get clicks | Be selected as the answer | Be included and cited in generated answers |
| Typical surfaces | Organic results | Featured snippets, People Also Ask, voice | ChatGPT, Gemini, Copilot, Perplexity, Google AI features |
| Unit of optimisation | Page | Question and answer passage | Entity, facts and passages |
| Key tactics | Technical health, keyword targeting, links, content quality | Question research, answer-first writing, structure | Entity consistency, evidence, corroboration, crawler access |
| Main metrics | Rankings, clicks, conversions | Snippet and PAA visibility, CTR | Citations, mentions, AI referrals, description accuracy |
The difference between SEO and GEO
The clearest difference is the output. SEO competes for positions in a list of links; the user chooses where to click. GEO competes for inclusion in a synthesised answer; the system chooses which sources to use and may or may not show a link. That changes what "winning" means. A GEO win might be your company named as a recommended provider in an AI answer, even if the user never visits your site immediately.
AEO vs SEO
AEO sits inside SEO. A page can rank well without answering a question concisely, but it is unlikely to win a featured snippet or be read by a voice assistant. AEO adds a discipline: identify the questions, answer them directly, then support the answer. Most of our answer engine optimization guide is simply good writing applied deliberately.
AI search vs traditional search
| Aspect | Traditional search | AI search |
|---|---|---|
| Query style | Short keywords | Longer, conversational questions with context |
| Result format | Ranked links | Synthesised answer, sometimes with citations |
| Follow-up | New search | Conversational follow-up questions |
| Visibility | Position on a page | Inclusion and attribution in the answer |
| Measurement | Mature tools | Developing, often indirect |
Despite these differences, Google states that its AI features are built on its core search systems and that the same best practices apply (AI features and your website). Other AI search tools also retrieve web pages before answering. That is why the foundations overlap so heavily.
What all three share
- Crawlable, indexable pages. Nothing can be ranked, extracted or cited if it cannot be accessed.
- Helpful, original content. Pages written for people, with real expertise and evidence.
- Clear structure. Descriptive headings, short paragraphs, lists, tables and FAQs.
- Trust signals. Named authors, accurate business information, reviews and reputable mentions.
- Technical quality. Speed, mobile usability and accurate structured data.
A unified search strategy
Instead of three separate programmes, build one content system that serves all three:
- Research questions, not just keywords. Capture the full questions buyers ask, including conversational versions.
- Assign each question to one page or section. Keep a single source of truth to avoid conflicting answers.
- Write answer-first. Lead each section with a concise answer, then expand with depth and evidence.
- Strengthen your entity. Keep company facts consistent across your site, structured data and external profiles; see entity SEO.
- Earn corroboration. Reviews, links, partner pages and media mentions support both rankings and AI recognition.
- Measure across surfaces. Track rankings and clicks, snippet visibility, AI referrals and self-reported attribution together.
Which should you prioritise?
For most businesses, the order is practical: fix SEO foundations first, add AEO structure to priority pages, then expand GEO work such as entity consistency, crawler access and corroboration. If your audience already relies heavily on AI assistants, which is increasingly true for B2B software and technical buyers, start GEO activities sooner. Our guide to how to rank in Google AI Overviews covers Google-specific steps.
Team roles for SEO, AEO and GEO
Small teams do not need three specialists. They need clear responsibilities. A technical owner keeps the site crawlable, fast and correctly marked up. A content owner researches questions, writes answer-first pages and keeps facts current. A brand or PR owner builds mentions, reviews and partner content that corroborate expertise. One person can hold several roles, but each responsibility should be named. Agencies can fill gaps, especially in technical SEO and content production, while internal experts provide the first-hand knowledge that makes content worth citing.
Measuring a combined strategy
| Metric | Covers |
|---|---|
| Organic clicks and conversions | SEO |
| Featured snippet and PAA appearances | AEO |
| AI assistant referral sessions | GEO |
| Brand mentions in AI answers for priority prompts | GEO |
| Pipeline from all organic and AI sources | All three |
If you want one plan that covers search, answers and AI visibility, our AI search visibility service is built around exactly this approach. Our field guide on SEO and AI visibility foundations is a good starting point too.
