GEO glossary
The AI-generated summary Google shows above the results, present on almost half of tracked searches.
AI Overviews are the summaries generated by Gemini that Google shows at the top of the results page, with links to the sources used. According to 2026 industry studies they appear on about 48% of tracked searches, up more than 50% in a year, and are active in most European markets on the majority of informational searches.
For a company they matter for two reasons: they reduce clicks on the results below (from 15% to 8% according to Pew Research, 2025) and they form the opinion of whoever is searching before any visit to the website. The sources of AI Overviews favour Google's Knowledge Graph, pages with structured data and authoritative sources on the entity.
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