The Constellation platform makes the communication easier between all kind of objects or programs through simple APIs and real-time platform. Instead of developping a specific and complex client-server architecture, Constellation creates a simple and open bus ! Thus it becomes easy to create ambient intelligence with objects communicating together ! For example, your security system can automatically lower your thermostat when you leave your home. Your media center can dim your lights when you watch a movie. Turn on the light of your desktop when your Windows session is unlocked or turn it off when you lock your session or close your PC. Once your program or object is connected to the Constellation, you can imagine anything and create ambiant intelligence.