In one sentence
What is GEO?
GEO (Generative Engine Optimization) is a method for improving content, entities, technical signals and third-party authority so generative AI is more likely to select and cite your brand or pages when answering a question.
Traditional SEO optimises how search engines rank links. GEO optimises how generative engines interpret a question, retrieve sources, verify a brand and extract an answer. The two share crawlability, content quality and authority foundations, but outcomes and measurement differ—so they should run in parallel, not as replacements for each other.
In the Hong Kong market, GEO also has to handle bilingual naming, local service areas, compliance and industry evidence. AI will not cite you because a page claims to be “the best in Hong Kong.” It needs checkable facts, clear answer passages and signals that can be verified in external sources. For platform differences, see AI citation platforms; for the practice framework, see the AIO method.