The public cloud services market is one of the biggest disruptions in the tech market in the last 15 years. In November 2016, we published our Forrester Data: Public Cloud Services Forecast, 2016 To 2020 (Global), estimating a 22% compound annual growth rate (CAGR) in the public cloud market through 2020. In this data-driven report, we look at how the public cloud services market has evolved in 2017 and 2018 and what new information has emerged since we published our forecast.