President of the Internet Society (ISOC) and co-creator of the Transmission Control Protocol/Internet Protocol (TCP/IP), he is considered the "father of the Internet." TCP/IP enables computers to talk to each other over the Internet, and Dr. Cerf proved that a network could reconfigure itself so that no communications are lost. He did this by simulating the breakup of the Defense Department's Internet network, "gluing" it back together using mobile radios in Strategic Air command aircraft. Dr. Cerf is also chairman of ICANN.
Together with Robert Kahn, a fellow computer scientist, Cerf spent eight years working on Internet infrastructure at the Corporation for National Research Initiatives. Previously at MCI in the 1980s, Cerf wrote MCI Mail, an early e-mail program. Mr. Cerf later worked at Google as Chief Evangelist.