GEO (Generative Engine Optimisation) is the practice of optimising a website, its content, and its entity signals so that generative AI engines — ChatGPT, Gemini, Claude, and Perplexity — discover it, understand it, and cite it in their generated answers.
GEO is the successor discipline to SEO for the AI era. SEO optimises for ranked blue-link results in traditional search engines. GEO optimises for being included, named, and linked when an AI engine synthesises an answer to a user's question.
The tactics overlap with SEO but the weightings differ sharply. GEO places heavy emphasis on structured data (JSON-LD), entity clarity, semantic HTML, authoritative long-form content, FAQ pages, glossary pages, and consistent cross-web mentions — because these are the signals AI engines rely on when they generate answers.