Web hosting service

 A web hosting service is a type of Internet hosting service that allows individuals and organizations to provide their own website accessible via the World Wide Web.

Web hosts are companies that provide space on a server they own for use by their clients as well as providing Internet connectivity, typically in a data center. Web hosts can also provide data center space and connectivity to the Internet for servers they do not own to be located in their data center, called colocation.

Perma link : http://en.wikipedia.org/wiki/Web_hosting_service