So forty years ago today - October 29, 1969 - two computer nodes connected between UCLA and SRI International (SRI) in Menlo Park, California.

These nodes eventually became the ARPANET (Advanced Research Projects Agency Network) created by ARPA of the United States Department of Defense during the Cold War.

The ARPANET was the world's first operational packet switching network - the predecessor of the global Internet we know and love and can't live without today.

So today's kind of the internet's 40th birthday ...