Google announced yesterday that it hired Cerf as Chief Internet Evangelist. Cerf is widely recognized as one of the founding fathers of the Internet for the role he played in the development of the TCP/IP protocol that is the core underpinning of the Internet, and indeed all modern IP communications.
From 1976 until 1982, Cerf was employed by the United States Department of Defense's Advanced Research Projects Agency (DARPA), which is where he helped to co-design TCP/IP.
More recently Cerf has been the chief Internet strategist for MCI WorldCom where he has worked since 1982 (with a hiatus between 1986 and 1994). Cerf also is currently the Chairman of the Internet Corporation for Assigned Names and Numbers (ICANN), a role which is expected to continue while he is at Google.