RDG is a new feature of Windows Server 2008, which can work independently of UAG, but with UAG, it is easier to use, because the user just launches the RDP application from the portal, and there's no need to configure the client with the server's address or move around the RDP configuration files. When you install UAG, it automatically configures the RDG service, and then publishes it using one of the following templates:
RemoteApp
Remote Desktop (Predefined)
Remote Desktop (User Defined)
RemoteApp is a new feature of Windows 2008 as well, which allows the user to connect to a single application using the remote desktop protocol. Instead of having a full connection to the desktop, only the application is running in a window. To the user, it looks as if the application is running on their own computer, but in fact, it's running on the remote computer, and only its display is sent to the client machine. For example, a customer can use his office Email program, with...