The service routing of Windows has the same standard interface called Service Control Management(SCM). They are automatic-running when the system starts up,or they even execute without the user login the system like UNIX daemon process.

• Windows下的服务程序都遵循服务控制管理器(SCM)的接口标准,它们会在登录系统时自动运行,甚至在没有用户登录系统的情况下也会正常执行,类似于UNIX系统中的守护进程(daemon)。