Generative Search

Generative search is a search experience in which the engine writes an answer from the pages it retrieved, rather than handing the person a ranked list to read. The list still exists behind the answer; the person sees the paragraph and the links it cites.

Retrieve, then write

The engine runs the query, and often several related queries. Google’s documentation on its AI features calls this fan-out and says it surfaces a wider set of links than one results page would. It fetches or reads the top candidates, selects passages that bear on the question, and generates a paragraph from them with citations to the pages used. The engines differ in how many sources they cite and how visibly, but the order of operations is the same, and it has a consequence for a website: a page must first be retrievable, then must contain a passage worth taking. Ranking gets a page into the candidate set. What is on the page decides whether it is used.

Google adds that no special markup or file is needed to appear in its AI features and that the ordinary preview controls, nosnippet, data-nosnippet, max-snippet and noindex, apply to them as they do in Search.

Generative search and GEO

The engine is the surface; generative engine optimization is the work of doing well on it. The pairing is deliberate: Aggarwal et al. coined both “generative engine” and the name of the practice in “GEO: Generative Engine Optimization” (KDD 2024). AI search, answer engine and conversational search are used for the same surface in other places; the mechanism above is what they share.

A common question

Does a page need special markup or a special file to appear in AI features?

Google states that none is needed, and that the ordinary preview controls, nosnippet, data-nosnippet, max-snippet and noindex, behave there as they do in Search. The order of operations is what a site should plan around instead. Ranking decides whether a page joins the candidate set the engine fetches, and what sits on the page decides whether a passage from it is worth lifting into the written answer. So a page has to be retrievable first and quotable second.

Sources

Fan-out, markup and preview controls: Google Search Central, AI features. Term of art: Aggarwal et al., “GEO: Generative Engine Optimization” (KDD 2024).