The amount of global IP traffic will almost triple over the next five years, hitting 3.3 zettabytes by 2021 as multiple factors continue to accelerate the worldwide digitization trend, according to Cisco Systems officials.

According to the latest version of Cisco’s annual Internet Visual Networking Index (VNI) forecast, the internet of things (IoT) will continue to be a driving force, while video will account for more than 80 percent of the traffic running over global IP networks.