What Is Windows Service (Previously Called NT Service)?
The core function of a Windows Service is to run an application in the background. A few things that make them different from a Windows application are that a Windows Service starts before any user logs on to the system (if it has been set up to start at boot up). The service can be set up in such a way that it requires the user to start it manually. Also, Windows Service has its own process; hence, it runs very efficiently. Normally, a Windows Service will not have a user interface for the simple reason that it can be run even if no one is logged on to the system. This is not a rule; you can still have a Windows Service with a user interface. In Windows 2000, you can view all the services running on your computer by opening Control Panel, Administrative Tools, and then clicking Services.
