Dr. Willard (Bill) Simmons is the co-founder and CTO of DataXu’s. He developed DataXu’s core technology while earning his PhD in Aeronautics and Astronautics at MIT. Bill came to DataXu with true rocket science credentials: he developed and tested real-time flight software for guidance, navigation and control of the Atlas family of space launch vehicles. He is an expert in optimal system design and in developing reliable real-time software. Bill Simmons founded the OpenRTB open source standard for real-time bidding, which has now been adopted as an official IAB standard.