Crawling is a method used by search engines like Google to discover and index content on the internet. During this process, automated programs called web crawlers or spiders systematically browse web pages, following links to gather information about the site's content and structure. This helps search engines understand what each page is about. Once the crawling is complete, the gathered data is stored in a database, allowing the search engine to provide relevant results when users enter queries. Effective crawling ensures that new and updated content is quickly recognized, improving the overall search experience for users.