Defining the Terms
The vocabulary of digital marketing has expanded rapidly. Here are the key terms every UK business owner should understand:
| Term | Full Name | Target Platform | Goal | Since |
|---|---|---|---|---|
| SEO | Search Engine Optimisation | Google, Bing | Rank in blue links | 1990s |
| AEO | Answer Engine Optimisation | ChatGPT, Claude, Perplexity, Gemini | Get cited in AI answers | 2023 |
| GEO | Generative Engine Optimisation | All AI-powered search | Appear in generative results | 2023 |
| LLMO | Large Language Model Optimisation | Foundation AI models | Be in training/retrieval data | 2024 |
How SEO and AEO Actually Differ
The fundamental difference is this: SEO tells Google where to rank your page. AEO tells AI models what your business is and why it should be recommended. They use different signals, require different content formats and serve different user intents.
| Factor | Traditional SEO | AEO / GEO |
|---|---|---|
| Primary signal | Backlinks, keyword density, page speed | Entity clarity, schema markup, authoritative citations |
| Content format | Long-form keyword articles | Answer-first, structured Q&A, FAQs |
| Trust signal | Domain authority, PageRank | E-E-A-T (Experience, Expertise, Authoritativeness, Trust) |
| Timeline | 6–18 months to rank | 4–8 weeks for AI citation |
| Output | Position in SERP | Citation in AI answer |
| User intent | Information seeking | Decision-ready, high commercial intent |
| Conversion rate | 1.76% Google organic | Up to 15.9% (ChatGPT) |
The GEO Market Opportunity
Generative Engine Optimisation is one of the fastest growing segments in digital marketing. The financial opportunity for early-mover businesses is substantial:
The UK SME Opportunity Window
Only 15% of UK businesses are currently optimising for AI platforms. That creates a 2-year window where early adopters can establish AI authority before the space becomes as competitive as Google SEO. The key sectors with the biggest AI adoption gap in the UK are:
A Practical AEO Checklist for UK Businesses
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