What is the difference between the Internet, the Web, an Intranet, and an Extranet?
The Internet is the generic network of connected internet servers. The World Wide Web is the set of internet servers that serve the Hypertext protocol (http://). An Intranet is usually a private network in a company or home with at least one Web server. An Extranet is usually considered a company Web server available to a controlled set of users with a user id and password.