It is the only source of search data that comes from Google itself. The performance report gives, per query and per page, impressions, clicks, average position and click-through rate for sixteen months. The indexing report explains every excluded page. Other reports cover Core Web Vitals, sitemaps, manual actions and security issues.
Since 2025 the clicks coming from AI Overviews and AI Mode are counted in the same web search report, without a separate line, so a rise in impressions with flat clicks is often the sign of answers given on the results page. Verifying a site in Search Console is the first task of any SEO work; the second is reading it monthly.