Microsoft® Windows NT® supports a Win32-based application type known as a service. A service may be started in two ways: automatically, when the system starts up; or upon demand, by Win32-based applications that use the functions provided by the Service Control Manager. For more information, see Services.
The Windows NT Service Control Manager and its associated functions are not supported by Microsoft® Windows® 95. Instead, Windows 95 provides a scaled-down Service Control Manager.