A VPS also allows for more customization and control of data transfer and storage, and thus many business owners will opt to switch to a VPS as their sites grow. Several virtual private servers can be installed on a single physical server, and customers can take as much space as they need. Many hosts even offer daily billing in which you only pay for the resources you consume. VPS hosting essentially acts in a similar way as a dedicated server without actually being one.
The user gets his or her own Web server but is not allowed full control over it (user is denied root access for Linux/administrator access for Windows); however, they are allowed to manage their data via FTP or other remote management tools. The user is disallowed full control so that the provider can guarantee quality of service by not allowing the user to modify the server or potentially create configuration problems. The user typically does not own the server. The server is leased to the client.