Short answer: SEO earns ranked links on a results page; GEO (generative engine optimization) earns mentions and citations inside AI-generated answers. The content foundations overlap, but the target — a ranked list versus a synthesized answer — is different.
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The Fundamental Shift
Classic SEO optimizes for a ranked page of ten blue links. GEO optimizes for the moment an assistant like ChatGPT, Perplexity, or Google's AI answers reads sources and writes a single response. Your goal moves from "rank first" to "be the source the model quotes."
GEO vs SEO Side by Side
| Dimension | SEO | GEO |
|---|---|---|
| Target | Ranked links on a SERP | Citations inside an AI answer |
| Unit of success | Position and clicks | Mentions, citations, share of answer |
| Content shape | Pages that rank for a query | Clear, quotable, well-structured facts |
| Signals | Links, relevance, technical health | Authority, clarity, structured data, consensus |
| Measurement | Rank trackers, Search Console | Prompt-based visibility monitoring |
What Still Overlaps
Most GEO fundamentals are good SEO: accurate, well-structured content, clear headings, strong topical authority, structured data, and a crawlable site. If your SEO foundation is weak, GEO will be too.
What GEO Adds
Where To Start
Keep doing SEO, then layer GEO: measure how models describe you today, fix entity and structured-data gaps, and publish quotable, authoritative content. For the full model, read generative engine optimization for brands and answer engine optimization.