John Chambers said it at the Partner Conference (and has been saying it often elsewhere) that Video changes everything.
“The sum of all forms of video (TV, video on demand, Internet, and P2P) will account for over 91 percent of global consumer traffic by 2013. Internet video alone will account for over 60 percent of all consumer Internet traffic in 2013.”
I created this chart using Cisco’s VNI Forecasting Wizard. The scale is in Exabytes and an exabyte is