SEO gets your pages ranked in Google's blue links. AEO gets your business cited as the answer in AI engines like ChatGPT and Perplexity. GEO gets you understood and recommended across all generative AI. They share one foundation — and most businesses need all three.
Search is splitting into three layers, and the terms for optimizing each one — SEO, AEO, and GEO — are easy to confuse. This guide explains exactly what each one means, how they differ, where they overlap, and how to decide which to prioritise for your business.
What is SEO?
Search Engine Optimization (SEO) is the practice of getting your pages to rank in traditional search results — the familiar list of blue links on Google. It focuses on keywords, content quality, backlinks, and technical health so search engines rank your pages higher. SEO has been the foundation of organic visibility for two decades, and it still drives the majority of organic traffic for most businesses. Learn more about SEO services.
What is AEO?
Answer Engine Optimization (AEO) is the practice of structuring your content so answer engines — ChatGPT, Perplexity, Google AI Overviews, and Copilot — cite you as the source when they answer a question. Instead of competing for a ranked position, you compete to be the trusted answer. AEO emphasises direct-answer formatting, FAQ and definition content, schema markup, and entity authority. See AEO services for how this works in practice.
What is GEO?
Generative Engine Optimization (GEO) is the broader discipline of optimizing your brand and content so generative AI systems understand and recommend you across every surface — not just one answer engine. GEO is entity-first: it makes large language models recognise who you are, what you do, and why you should be recommended. AEO is essentially a subset of GEO focused on the "answer" moment. Explore GEO services.
How SEO, AEO & GEO relate
flowchart TD
Q([Someone searches]) --> R{Where?}
R -->|Google blue links| SEO[SEO: rank the page]
R -->|AI answer engine| AEO[AEO: be the cited answer]
R -->|Any generative AI| GEO[GEO: be understood & recommended]
SEO --> WIN([Visibility + leads])
AEO --> WIN
GEO --> WIN
style Q fill:#1a1a1a,stroke:#C8FF00,color:#E8E8E8
style WIN fill:#1a2800,stroke:#C8FF00,color:#C8FF00
style GEO fill:#111,stroke:#C8FF00,color:#E8E8E8
The key differences
- Target: SEO targets ranked pages; AEO targets cited answers; GEO targets being understood by AI models everywhere.
- Output: SEO wins a blue link; AEO wins a citation inside an AI answer; GEO wins a recommendation across AI systems.
- Signals: SEO leans on keywords, links, and technical health. AEO and GEO add entity signals, schema, direct-answer structure, and recency.
- Overlap: All three share foundations — quality content, authority, E-E-A-T, and clean technical SEO. Strong SEO makes AEO and GEO far easier.
Where they overlap
These are not competing strategies — they are layers. Domain authority, topical depth, original content, and technical health help you rank on Google AND get cited by AI. The biggest practical difference is structure: AEO and GEO reward content that opens with a direct answer, uses clear question-based headings, and carries explicit schema and entity signals. The good news is that this structure also improves your traditional SEO.
In short: SEO gets you ranked. AEO gets you cited. GEO gets you recommended. Most businesses need all three, built on one shared foundation — which is why I usually deliver them together.
Which should you prioritise?
If you have no organic presence yet, start with SEO foundations — they underpin everything. If you already rank but are invisible in AI answers, prioritise AEO and GEO. For most businesses the right answer is an integrated approach: solid SEO, layered with AI SEO, AEO, and GEO so you show up wherever your customers search.