AEO vs SEO: Differences, Overlaps and How to Run Both
SEO optimizes for a ranked list of links; AEO optimizes for being cited inside an AI answer. Where the two agree, where they diverge, and how to measure each.
The core difference
SEO goal: rank in the top results for a keyword and win the click.
AEO goal: be named, cited or recommended inside the answer an AI engine writes. The user may never click at all.
Where they overlap
| Practice | SEO | AEO |
|---|---|---|
| Authoritative, well-structured content | High | High |
| Fast, crawlable pages | High | Medium (AI crawlers must be allowed) |
| Clear heading hierarchy | Medium | High |
| Schema markup (Organization, FAQPage) | Medium | High |
| FAQ sections and direct answers | Medium | Critical |
| Third-party coverage (reviews, comparisons, communities) | Medium | Critical |
Where they diverge
- Keyword vs question. SEO targets keywords with search volume. AEO targets the questions people actually ask an assistant, in each market's language. That is why Citadex tracks prompts, not keywords.
- One engine vs many. SEO mostly means Google. AEO means seven or more engines with different training data and retrieval behaviour; the same prompt can name you on Perplexity and ignore you on Gemini.
- Position vs presence. AEO is closer to binary per answer: you are in it or you are not. Coverage rate (share of engines that mention you) matters more than a rank.
- Crawlers. AI engines use their own crawlers (GPTBot, ClaudeBot, PerplexityBot and others). They come in three purposes: search, user-triggered and training; if robots.txt blocks the search crawlers, no amount of SEO helps. AI Traffic → AI crawlers gives a verdict by purpose and shows whether they actually visit and hit errors.
How to measure each
SEO: organic sessions, keyword rankings, click-through rate. AEO: visibility score and coverage per prompt (Workspace, Prompt Tracking), how often you are recommended and weighted recommendation share (Workspace From mention to recommendation, Competitors), citation share and gap score (Citation Sources), AI crawler hits and AI referrals (AI Traffic), and the leads and revenue AI brings (Revenue Attribution).
An integrated plan
- Fix the foundation both need: crawlable pages, clear entity statements, schema.
- Keep your SEO keyword program running.
- Add the AEO layer: track prompts per market, publish direct-answer content for the gaps, earn citations on the sources engines already trust, and re-check.
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