Web crawling is an automated process employed by search engines and other web services to discover and index new or updated web pages across the internet. It involves a web crawler, often called a spider or bot, systematically browsing the World Wide Web. The crawler starts with a list of known URLs and then follows hyperlinks found on those pages to identify and visit additional ones, recursively repeating this action. Its fundamental purpose is to collect information from vast numbers of documents, images, and other files available online. This gathered data is subsequently used to create a massive index, enabling users to quickly retrieve relevant information when they perform a search query. Ultimately, web crawling ensures that search engines maintain comprehensive and current databases of web content. More details: https://du.ilsole24ore.com/utenti/passwordReset.aspx?RURL=https://epi-us.com/