SEO vs. GEO
SEO puts you in the list; GEO puts you in the answer. SEO optimizes document ranking in a classic SERP. GEO optimizes the chance of being cited in text a generative engine writes from multiple sources. GEO doesn't replace SEO: AI Overviews pulls from Google's index, ChatGPT from Bing — without an SEO foundation there's nothing to optimize generatively.
The mechanism: document ranking (SEO) vs. synthesis from multiple sources, with citation (GEO). SEO becomes the infrastructure for GEO.
SEO
Search Engine OptimizationOptimization for classic search engines (Google, Bing) with the goal of appearing in the list of results. Built around indexing, ranking, and query-triggered relevance.
It remains the entry ticket. Without crawlability, indexing and authority, you don't exist in any generative surface.
GEO
Generative Engine OptimizationOptimization for generative engines that synthesize answers from multiple sources — ChatGPT, Perplexity, Claude, and Google AI Overviews. Unlike classic SEO, which targets ranking in the result list, GEO targets presence in the answers produced by large language models.
When your customers ask AI instead of searching. Position 1 in Google guarantees nothing in ChatGPT — the overlap is surprisingly small.
This comparison is part of the Atlas — Websem's reference of AI search, Google Ads, tracking and chatbot terms. 129 terms, each with its own definition.