SEO vs GEO vs AEO: What’s the Difference, and Which One Does Your Business Need?
SEO, GEO and AEO are three overlapping ways to get found. SEO (Search Engine Optimization) makes you rank in Google’s list of links. AEO (Answer Engine Optimization) makes you the source behind a direct answer — featured snippets, voice results, “position zero.” GEO (Generative Engine Optimization) makes you a cited brand inside AI assistant answers from ChatGPT, Claude, Perplexity and Gemini. Most businesses need all three, built on one technical base — not three separate projects.
Quick comparison
| SEO | AEO | GEO | |
|---|---|---|---|
| Goal | Rank in the list | Be the answer | Be cited in the AI answer |
| Surface | Google results | Snippets, voice, “position zero” | ChatGPT, Claude, Perplexity, Gemini, AI Overviews |
| Main levers | Keywords, backlinks, speed | Structured Q&A, schema, clarity | Entity coverage, citable content, schema, crawler access |
| KPI | Rankings, clicks | Snippet ownership | Citation rate, mention share |
How they relate
Think of them as layers, not rivals. AEO grew out of SEO when Google started answering questions directly instead of only listing links. GEO is the newest layer, born in 2024 as generative assistants became a primary way people research decisions. The underlying work — clean crawlable pages, accurate schema, well-structured content — feeds all three. That’s why building them together is far cheaper than commissioning three separate campaigns.
Which does your business need?
- You sell locally or answer common questions → AEO first. Own the snippet and the voice answer for “who does X near me.”
- You depend on organic traffic and content → SEO remains the foundation. Rankings still drive volume.
- Your buyers research in AI before contacting anyone → GEO is urgent. B2B and considered-purchase brands especially: decision-makers now ask assistants for a shortlist before they ever visit a website.
In practice, the answer is rarely just one. A business that ranks in Google, owns the snippet, and gets named by ChatGPT wins the query from every angle.
Building all three on one system
The mistake is treating each as a separate line item. Because roughly 80% of the technical foundation is shared, the efficient path is a single build that serves all three surfaces. WebCoreLab — a full-cycle Toronto studio active since 2001 — runs SEO, AEO and GEO as one workflow: audit, fix the shared technical base once, then tune the specific signals each surface rewards, and measure results across Google and the AI engines.