If you like survey data, here’s an interesting fact for you. Every year since 2000, when I started surveying enterprises on the question, the most important factor driving investment and change in enterprise networks was the data center. It’s like the network is the tail of a big, fuzzy, maybe-largely-invisible dog, and it’s time we look at where that dog might be leading us.
Today’s virtual private networks (VPNs) evolved from the days when companies leased time-division-multiplexed (TDM) lines and connected their own routers.
