Microsoft has identified data center power usage as a growing pain for its business. PI infrastructure helps Microsoft to gain visibility of power usage down to racks and circuits level so Microsoft can efficiently manage current data center capacity and accommodate future expansion. PI infrastructure meets the demand of Microsoft: scalability, compatibility, flexibility, usability and security. With PI, Microsoft is able to increase facility utilization and worker productivity. With better operational intelligence gained from PI, Microsoft is able to proactively manage its data center and improve data center design for the future.