Microsoft Remote Desktop is an official app from Microsoft that, as its name would suggest, lets you control your PC directly from your Android device. To do so, you only need to set up the device and associate it with the PC you want to control.
Microsoft Remote Desktop is optimized for use with Windows 8, and its tiled interface works much better with a touchscreen than the classic Windows desktop (XP, Vista, 7). This means the app is especially recommended for users of this operating system.
The audio and video streaming quality you get on your mobile device, depending on your Internet connection, is excellent. Also, you get a totally secure connection thanks to the Network Layer Authentication technology that works to protect your privacy.
Network Layer Authentication is a very complete tool that makes controlling your Windows PC remotely on your Android device easy. Also, all the touchscreen features from Windows 8 make its use that much faster on a mobile device.