Internet Information Server and its component services, HTTP Service (WWW), the File Transfer Protocol (FTP) Service, and Gopher Service, run jointly in a user-mode process called Inetinfo.exe. Like most well-designed user-mode processes, the IIS services derive much of their benefits from the Windows NT operating system architecture, including the Windows NT Security model, RPC communication, messaging, the file systems, and other operating system services. Thus, monitoring memory for Internet Information Server begins with monitoring overall server memory, even on a multipurpose server.