Routing and remote access service (RRAS) is a suite of network services in the Windows Server family that enables a server to perform the services of a conventional router. RRAS includes an application programming interface (API) that facilitates the development of applications and processes for administering a range of network services.

Windows Server 2000, 2003 and 2008 are integrated with various network services and specific APIs that enable a server to provide data and network routing functionality. RRAS, which transforms a Windows Server into a virtual/software router, is among these programming interfaces. RRAS applications cover a broad domain of network routing and enablement services, which can be centrally administered by the server domain controller.