Guide
GEO vs SEO (and AEO): What’s the Difference and Which Do You Need?
GEO (Generative Engine Optimisation) is the practice of getting your content cited inside AI-generated answers; SEO (Search Engine Optimisation) is the practice of ranking in classic search results. They are not rivals. GEO sits on top of SEO: the same technical health, content quality and authority that earn rankings are what make a page worth citing. The difference is in the output you optimise for and a handful of extra practices.
By Asad Ullah, FounderUpdated 19 October 20264 min read
In this article
01
Definitions
02
GEO vs SEO: the practical differences
03
Why GEO still depends on SEO
04
What GEO adds on top of good SEO
+ 3 more sections, FAQ and next steps
Short answer: SEO gets you ranked. AEO gets you the direct answer box. GEO gets you quoted by AI. You need the foundation (SEO) before the other two work.
Definitions
SEO — Search Engine Optimisation
Improving a website so it ranks higher in organic search results for relevant queries. It spans technical SEO, on-page optimisation, content and link building. Read how SEO works.
AEO — Answer Engine Optimisation
Optimising content to win direct answers: featured snippets, “People Also Ask” boxes and voice-assistant responses. The emphasis is on answering a specific question precisely, early in the page, with supporting detail beneath.
GEO — Generative Engine Optimisation
Optimising content so generative AI systems — Google AI Overviews and AI Mode, ChatGPT search, Perplexity, Gemini, Copilot — select and cite it when composing an answer. The emphasis is on clarity, structure, verifiable claims, consistent entities and recognisable authority.
GEO vs SEO: the practical differences
| SEO | GEO | |
|---|---|---|
| Goal | Rank in the top organic results | Be cited in the AI-generated answer |
| Unit of success | Position and click-through | Citation, mention, brand inclusion |
| Content format | Comprehensive pages matching intent | Answer-first sections, clear claims, data, definitions |
| Authority signals | Links, brand searches, E-E-A-T | Same, plus mentions on sources LLMs draw from |
| Measurement | Rankings, clicks, conversions | AI citation tracking, referral traffic from AI tools, brand visibility |
| Can you control it? | Partly — rankings are competitive but predictable | Less — citations vary by query, model and time |
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Why GEO still depends on SEO
Generative engines retrieve candidate sources before they write. In Google’s case, AI Overviews are grounded on pages Google already indexes and ranks; in ChatGPT’s and Perplexity’s cases, live web search is used to fetch sources. If your page can’t be crawled, isn’t indexed, or sits on page five, it is rarely in the candidate set at all. Technical SEO, indexation and a reasonable ranking are prerequisites for GEO, not alternatives.
What GEO adds on top of good SEO
- Answer-first structure. State the answer in the first sentence under each heading, then expand. Models and snippet algorithms both favour this.
- Explicit, verifiable claims. Numbers, dates, sources and definitions give an AI something concrete to quote and attribute.
- Entity consistency. Your organisation, people, products and services described the same way on your site, in schema and across third-party profiles.
- Topical completeness. Covering a subject fully (pillar + cluster) makes your site the canonical source rather than one of many partial ones.
- Mentions where models look. Coverage on authoritative publications, forums and reference sites increases the chance your brand is named — classic digital PR with a new purpose.
- Clean, crawlable HTML. Content hidden behind JavaScript interactions, tabs or PDFs is less likely to be used.
AEO vs SEO vs GEO: which should you prioritise?
For most UK businesses the order is: fix SEO fundamentals first; then restructure your most important pages for AEO (direct answers to the questions your buyers ask); then extend into GEO with entity work, data-led content and digital PR. The good news is that each step improves the previous one — answer-first pages tend to rank better in classic search too.
How to measure GEO
There is no single “AI rank”. Practical measurement combines: manual or tool-based checks of AI Overviews and AI chat answers for a fixed set of commercial queries; referral traffic from chatgpt.com, perplexity.ai and similar in GA4; brand-search volume trends; and the classic SEO metrics that underpin it all. We report on all of these in our AI SEO service.
Frequently asked questions
Is GEO replacing SEO?
No. GEO depends on SEO. The sites being cited by AI are overwhelmingly the ones that already rank well and are technically sound.
What is the difference between AEO and GEO?
AEO targets direct-answer features in search (snippets, People Also Ask). GEO targets citations inside AI-generated answers. The techniques overlap heavily.
Can an agency guarantee AI Overview placement?
No. Citations vary by query, model and time. An honest agency optimises the factors that correlate with citation and reports what changes.
Does schema markup help with GEO?
It helps machines understand entities and relationships, which supports both rich results and AI understanding — as long as it reflects the visible content.
Want to know where your brand shows up in AI search? Our AI SEO services include a free visibility check for your five most important queries.
Next steps
Related services and guides
AI search optimisation
Get cited in AI Overviews and ChatGPT.
AI SEO tools
Assistants and AI-visibility trackers.
Google ranking factors
Confirmed, likely and myths.
FAQ
Questions we get asked
What is GEO?
Generative engine optimisation — making your content the source that AI-generated answers (AI Overviews, ChatGPT, Gemini, Perplexity) cite.
Does GEO replace SEO?
No. AI answers are built from indexed web pages; the credible, well-structured pages that SEO produces are the ones that get cited.
How do I measure AI visibility?
Track a fixed set of priority queries across AI platforms monthly, noting whether and where you are cited. Tools include Otterly, Peec and Profound.
Can you do GEO for us?
Yes — as a £350/month add-on to any package, a standalone programme from £750/month, or an AI visibility audit from £1,500.
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