What is ARPANET (Advanced Research Projects Agency)?

The ARPANET was set up by the Advanced Research Projects Agency (ARPA) of the United States Department of Defense in 1966. ARPANET was the first wide-region packet-switched organization with dispersed control and to implement the TCP/IP protocol suite. In 1969, the idea turned into a humble reality with the interconnection of four university computers. The starting aim was to communicate with and divide computer resources between fundamentally scientific users at the associated foundations.