Server is a computer that "hosts" many files that can be accessed by many other computers at a fast pace. Servers are typically housed in hosting networks and each servers is capable of holding hundreds of complete websites. Professional hosting networks can handle continuous "requests" (made by web browsers) for site files. Most web hosts own or hire server machines installed in a major network. Servers are usually remotely controlled, hence a host in Australia can control web hosting space on US networks, or indeed anywhere in the world.