| Subject | English | Korean |
| comp., MS | communications service | 통신 서비스 (The program that runs the server through which Communicator connects with other users) |
| comp., MS | Windows Communication Foundation application service | WCFWindows Communication Foundation 응용 프로그램 서비스 (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) |