Cloud Data Traffic to Grow to 14.1 Zetta Bytes per year by 2020 Posted on 11/11/2016 by ians Cloud data traffic is expected to rise 3.7 fold -- up from 3.9 zettabytes (ZB) per year in 2015 -- to 14.1 ZB per year by 2020, a new report by global networking giant Cisco revealed on Friday....