Direct Answer
SEO targets the blue-link search results — Google, Bing — and is measured in rankings, clicks, and impressions. GEO targets citations inside AI-generated answers in ChatGPT, Perplexity, Claude, and Google AI Overviews. SEO and GEO share most of the same foundations (clean HTML, schema, fresh content) but diverge on direct-answer formatting, llms.txt, and citation strategy.
Voice answer (≤30 words)
“SEO targets blue-link rankings. GEO targets citations inside AI-generated answers. They share most foundations but differ in formatting and llms dot txt.”
Most service businesses should run both as one program. The cost overlap is high; the upside compounds.
Track SEO with Search Console; track GEO with weekly prompt-test runs across each major engine.