AI Overviews
AI Overviews are AI-generated summaries that appear at the top of Google Search results, assembled from pages in Google's ordinary Search index.
Because Overviews are generated from the same index that produces normal results, there is no separate index to be admitted to. Being crawlable and indexable by Googlebot is the prerequisite — you generally cannot appear in an Overview for a query you cannot rank for at all.
Google-Extended, often confused with this, is a separate control governing whether your content is used to train Gemini models. Blocking it does not remove you from Search or from Overviews.
Why it matters
AI Overviews reach more people than any standalone assistant, simply because they appear inside the search everyone already uses. They are also the surface where conventional SEO work translates most directly into AI visibility.