The World Wide Web is home to millions of Web sites, set up by businesses, agencies, institutions, individuals, and others. You name it, it's probably somewhere on the Web. The Internet and the World Wide Web are closely related but not the same. The Internet is a decentralized global network of computers. The Web is a collection of documents, or Web sites, that you can access using the Internet and your Web browser.
Web sites reside on computers called Internet servers.
When you're connected to the Internet, your Web browser can communicate with Internet servers, asking them to send to your computer a copy of the Web page you'd like to see. But the general public didn't use the Internet much until after the development of the World Wide Web in the early 1990s. As recently as June 1993, there were only 130 Web sites. Now there are millions. No one authority controls the World Wide Web.