Lync Server Management Shell(The management command line interface built on Windows PowerShell technology that includes a set of cmdlets to help control administration and automation)
Windows Communication Foundation application service(An application service such as authentication, profile properties, or roles, that can be accessed by any non-ASP.NET application that can read and send messages in SOAP format. WCF services enable different types of applications to share common data, such as user credentials for logging in)