SEO vs GEO vs AIO: what is the difference?

These three terms are often mixed up, but each targets a different part of search.

SEO

Search Engine Optimization earns rankings in the list of results on Google and Bing. It covers technical health, content and authority.

AIO

AI Optimization focuses on appearing inside AI summaries such as Google AI Overviews. It rewards clear, well-structured answers and strong trust signals.

GEO

Generative Engine Optimization aims to get your brand named in answers from chat-style AI tools like ChatGPT, Gemini and Perplexity.

How they fit together

They share a foundation: helpful content, technical quality and authority. Strong SEO makes GEO and AIO easier, and GEO and AIO protect your visibility as search habits change.