AI search optimization (AIO) is the practice of making your content extractable by large language models and embedding your brand across the sources those models read. It overlaps with SEO but diverges in five ways that matter: You’re writing for extraction, not ranking: LLMs lift self-contained sentences out of pages. Every section should open with an answer-first statement that a model can quote without surrounding context. Off-site presence outweighs owned content: Only 23% of branded-query A