Search engines work by crawling, indexing, and ranking web content. They use bots, called spiders, to explore web pages and links, gathering data. This data is then analyzed and stored in a database known as an index. When a user enters a query, the search engine retrieves relevant results and ranks them based on factors such as relevance, authority, content quality, and user experience. These results are displayed on the Search Engine Results Page (SERP) as organic listings, paid ads, or rich snippets. Optimizing your website for SEO helps improve visibility and rankings.