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Every web site is managed by a web server. The web server handles all of the network communications with individual user browsers. The server accepts HTTP requests for web pages, and sends the requested pages to browsers over the Internet.
Any Windows, Macintosh, or Unix computer is capable of running a web server when it is connected to the Internet. However, it isn't practical over a dial-up connection since they are slow, not always connected, and change their IP Address every time you log on. A dedicated connection in an office, or a high speed home connection like DSL, provides the always-on attribute needed to run a reliable web server.
Different web servers have different scalability, robustness, security, transportability, and related features. A web server may be dedicated for one domain name, or maintain web sites for several domains.
Resources. The following resources provide information about web servers: