Ubisoft Connect (Formerly Uplay) is a service created by Ubisoft that provides its users an experience similar to other game companies' achievements.
The service is provided on various platforms, including PC, Mac, PS3, Xbox 360, Facebook, iPhone, iPad, and most recently revealed, OnLive.
Each enabled game has various actions that can be accomplished to earn Uplay points. You can spend these points to unlock game-related rewards for any available game. On it, you can find the hottest games from Ubisoft.
Should you experience problems installing, right-click on UplayInstaller.exe and choose Run as administrator.