Google Search Console is a free tool provided by Google that helps website owners monitor and maintain their site's presence in Google Search. It offers insights into how a site is performing in search results, including data on clicks, impressions, and average position for specific queries. Users can also identify issues that may affect their site's visibility, such as crawl errors or mobile usability problems. Additionally, Google Search Console allows users to submit sitemaps and individual URLs for indexing, helping to ensure that their content is discoverable by search engines.