DARPA, the Defense Advanced Research Projects Agency, a division of the U.S. Department of Defense, funded the development of TCP/IP in the mid 1970s as a collaborative project between research groups at BBN Technologies, Stanford University, and the University College London. Between the mid-1970s and early 1980s, a number of TCP/IP tests were conducted resulting in further development of the communication protocol suite, which culminated in the migration of ARPANET to TCP/IP in 1983.