Virtual host is on a network server disk space by a certain place for the user to the site, application components, etc., to provide the necessary sites, data storage and transmission capability. The so-called virtual hosting, also called "web space", is to run a server on the Internet, divided into multiple "virtual" servers, each virtual host has a separate and complete Internet domain name server (support for WWW, FTP , E-mail, etc.) functions. Web hosting is the gospel of network development, greatly promote the application and popularization of network technology. Rental services also hosting the Internet age has become a new economic form. Rental housing is similar to the virtual host rent.