How Web Crawling Works
A web crawler starts with a list of URLs and visits each one, fetching the page content and extracting links to other pages. It then adds those new links to its queue and continues visiting them until a predefined stopping condition is met. The result is a comprehensive map of a website or a set of websites, including all pages and links.
For example, a company might use a web crawler to gather data on all product listings from e-commerce websites, following links to individual product pages, categories, and pricing information.