Indexing and snippet eligibility
A page that is not indexed, or cannot show a snippet, cannot be a supporting link. There is no extra technical requirement: Search rules apply.
Guide · Google AI Overviews
AI Overviews are the AI-generated summaries Google shows above the organic results. There is no application form and no separate index: they draw on pages Google has already indexed and that are eligible to show a snippet. This guide explains how sources are chosen, which Italian sectors see the summary most often and the concrete steps to get cited.
To appear in an AI Overview a page must be indexed, eligible for a snippet and answer the question in its first lines. Google says no special optimization is needed beyond SEO fundamentals, but in practice the cited pages are the ones that also cover the related questions Google runs to build the answer, write short extractable answers, use structured data that matches the text and are named by third-party sources. The nosnippet and max-snippet controls decide how much of your text can end up in the summary.
The summary is grounded in the Search index, not a separate database. Four things matter.
A page that is not indexed, or cannot show a snippet, cannot be a supporting link. There is no extra technical requirement: Search rules apply.
To build the answer Google may run several searches on the facets of the question. A page can be cited even if it does not rank first for the main query, as long as it answers one of those facets well.
The summary lifts short, self-contained sentences: an opening definition, a list of steps, a table of numbers. An answer buried under three paragraphs of introduction stays out.
Experience, expertise, authoritativeness and trust (E-E-A-T) weigh as they do in Search: a recognizable author, sourced data, recent updates and mentions on other sites.
We analyzed Italian keywords across more than 300 sectors (Semrush export, September 2026) and counted how many show an AI Overview. The gap between sectors is huge: where the search is a question to understand, the summary is almost always there; where it is a product to buy, almost never.
The most exposed sector: most questions about accounts, mortgages and cards already get an AI answer above the links.
Car and home insurance, online courses: questions about costs and differences, the format the summary covers best.
Renovations, heat pumps, accountants, lawyers, physiotherapists: one search in four or five shows an AI Overview.
Almost never: for shoes, clothing, furniture and restaurants Google keeps showing products, maps and links.
Informational searches (how, what, how much, difference between) trigger the summary far more often than commercial or navigational ones. If your sector is in the first three groups, part of the searches that used to send you traffic already get an answer before the links.
In order of impact. The first two are the minimum conditions, the rest make the difference between being eligible and being chosen.
Use URL Inspection in Search Console to confirm the page is indexed and has no nosnippet or overly low max-snippet. Without this nothing else counts.
Open with a direct, complete answer to the title's question, written to stand on its own. Context comes after.
Take questions from Search Console, Google's suggestions and the 'People also ask' box and use them as H2s. Each section answers one question.
List the facets of the search (costs, timing, differences, common mistakes, alternatives) and answer each one. That is where Google looks for sources when it breaks the question down.
Tables, numbered lists, steps that start with a verb. Data with a date and a source: the summary prefers a verifiable number to an adjective.
Article, FAQPage, HowTo, Organization and Product where they fit, always faithful to what is visible on the page. Schema alone does not get you in, but it helps Google understand entities and answers.
Search Console counts AI Overview clicks inside Web traffic, with no dedicated filter. Knowing which questions you appear on, and who is cited instead of you, takes recurring checks on your sector queries; update the pages that lose the citation.
The same controls as snippets apply to AI Overviews. Use them carefully: they also limit how the page appears in regular results.
Robots meta tag that stops Google from using the page text in snippets and AI Overviews. The page stays indexed but cannot be cited in the summary.
HTML attribute that excludes only parts of the page, for example a reserved price or legal text.
Caps the characters Google may reuse. A value that is too low reduces the chance of being cited.
Blocks use of your content for training Gemini and for Gemini app answers, but has no effect on AI Overviews, which depend on Googlebot.