What is specific to AI Overviews
This is a feature of Google Search, not a separate product, so it inherits Search's crawler, index and controls. That changes which levers exist.
- Googlebot is the only crawler involved. Google-Extended controls Gemini training and grounding, and does not remove a site from AI Overviews
- nosnippet, data-nosnippet and max-snippet limit what can be shown, and they apply to AI Overviews as they do to regular snippets
- Overviews appear only on some queries, and Google chooses when; informational and comparative questions trigger them far more than navigational ones
- Linked sources often include pages that do not rank in the top ten for the typed query, because the overview draws on related sub-queries
- Clicks and impressions from AI features are reported inside the ordinary Search Console Performance report, not in a separate view