AI Mode is Google's full conversational search experience: a Gemini-powered chat where you can ask, follow up, and refine, and get synthesised, cited answers rather than a page of links.
It's worth distinguishing from its sibling, the AI Overview. An Overview is a summary block that appears above normal search results; AI Mode is a dedicated, back-and-forth chat surface. Both pull from Google's index and lean on query fan-out. Decomposing your question into many sub-searches, but AI Mode goes deeper into multi-turn research.
For brands, AI Mode raises the stakes of the same fundamentals: because Google grounds these answers in its existing search index, the structured, authoritative content that wins rankings and Overviews also feeds AI Mode. It's another high-traffic surface where being cited in the answer, not just ranked below it. Is the goal.