What are Google’s AI Overviews?

Definition

AI Overviews are Google's AI-generated summaries that appear at the top of SERPs for certain queries. Powered by Gemini, they synthesize a response from several identified web sources. Being cited as a source in an AI Overview is now the priority GEO objective on Google.

AI Overviews represent Google's most visible transformation since the introduction of featured snippets. Gradually deployed from 2024 under the name SGE (Search Generative Experience), they display a Gemini-based generative summary at the top of certain SERPs, before classic organic results.

What AI Overviews change for SEO traffic

The impact on organic traffic is asymmetric depending on query type. On simple informational queries, AI Overviews mechanically reduce clicks: users get their answer without clicking. On complex or transactional queries, sources cited in the AI Overview benefit from additional visibility and generate qualified clicks. SEO strategy must integrate this new reality: targeting citation in AI Overviews is a distinct objective from classic ranking.

Which content gets cited in AI Overviews

Google selects AI Overview sources according to criteria similar to featured snippets: direct, precise response to intent, structured content with short paragraphs and clear headings, domain authority on the topic, and content freshness. Structured data (FAQPage, HowTo, DefinedTerm) reinforces these signals. Google confirms that classic SEO best practices remain the foundation for appearing in AI Overviews.

AI Overviews vs. citation in third-party LLMs

Google's AI Overviews and citations in ChatGPT or Perplexity work differently. AI Overviews use Google's real-time index via Gemini — so classic SEO signals are directly applicable. Third-party LLMs rely on their training corpora and, for RAG systems, on their own index. A complete GEO strategy must work both channels simultaneously.

No. Google triggers AI Overviews primarily on informational queries where a synthesis adds value. Transactional, local, or navigational queries are less likely to generate one. Deployment also varies by country and language — English-speaking markets are significantly more exposed than French-speaking ones at this stage.

Yes. The nosnippet tag or data-nosnippet attribute tell Google not to extract excerpts from content. But blocking AI Overviews also means forgoing classic featured snippets. For the vast majority of sites, being cited as a source in AI Overviews is more advantageous than being absent.

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Related terms

GEO / AEO

GEO (Generative Engine Optimization)

GEO refers to all practices aimed at optimizing a brand's visibility in responses generated by LLMs such as ChatGPT, Claude, or Perplexity. The goal is not only to drive direct traffic, but to be cited as a reliable reference in AI-generated answers.

GEO / AEO

AEO (Answer Engine Optimization)

AEO refers to all practices aimed at optimizing content to appear in direct answers from search engines and AI assistants. It is a natural extension of SEO, focused on systems that synthesize a response rather than returning a list of links.

SEO

SERP

A SERP (Search Engine Results Page) is the page displayed by a search engine in response to a query. It no longer contains only blue links: AI Overviews, featured snippets, knowledge panels, local results, images, videos, PAA, and ads coexist and redefine the visibility zones worth targeting.