Answer engines · definitions
What is AEO (Answer Engine Optimisation)?
Last updated 14 August 2026
Answer Engine Optimisation (AEO) is the practice of structuring a business's public information so answer engines — ChatGPT, Google AI Overviews, Gemini, Perplexity and Copilot — can understand, trust and cite it directly in their answers. It combines structured data, answer-first content, entity clarity and trust signals rather than chasing traditional blue-link rankings alone.
The basics
What does AEO stand for, and why now?
AEO stands for Answer Engine Optimisation. An "answer engine" is any system that responds to a question with a synthesised answer rather than a page of links — ChatGPT, Google's AI Overviews and AI Mode, Gemini, Perplexity and Microsoft Copilot. When these systems answer "who is the best provider near me?", they name a shortlist. AEO is the work that makes a business clear, consistent and trustworthy enough to appear in that shortlist.
Answer engines do not read a business the way a buyer does. They rely on machine-readable signals — structured data, entity consistency, reviews, and content written as direct answers — to decide who is safe to cite. AEO improves those signals.
Comparison
How is AEO different from traditional SEO?
| Dimension | Traditional SEO | AEO |
|---|---|---|
| Goal | Rank a page in a list of blue links | Be understood and cited inside a synthesised answer |
| Surface | Google search results page | ChatGPT, AI Overviews, Gemini, Perplexity, Copilot |
| Unit of success | Position and clicks | Being named or recommended in the answer |
| Key levers | Keywords, links, page speed | Structured data, entity clarity, answer-first content, trust signals |
| Content style | Long-form pages targeting queries | Direct answer capsules a machine can lift |
AEO does not replace SEO — it builds on it. Clean technical SEO, fast pages and a crawlable site are prerequisites. AEO adds the entity and answer layer on top so AI systems can quote you confidently.
How it works
How do answer engines decide what to cite?
- Structured data (schema) that states clearly what the business is, does and where
- A consistent entity — the same name, address and details across the site, Google Business Profile and directories
- Answer-first content that responds to real buyer questions directly
- Trust signals: reviews, an identifiable author or operator, and credible third-party mentions
- Freshness — recently updated, accurate information
Citable's method is diagnose → score → fix → re-test: we test how AI and Google understand a business today, score the gaps across ten citation-readiness signals, fix the controllable ones first, then re-test the same buyer-intent prompts.
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