A search engine is a software tool or online service that allows users to search for information on the internet. It works by indexing and organizing webpages and other digital content, making it accessible and searchable based on keywords or queries entered by the user. The search engine then retrieves relevant results from its database and presents them to the user in a ranked order based on various relevance factors, such as website authority, content quality, and user preferences. Some popular search engines include Google, Bing, Yahoo, and DuckDuckGo.
