This IDC study provides a top-down sizing of the cloud system software market in 2016 and a 2017–2021 forecast for this market. Historical and forecast revenue data is shown for the total worldwide market. Cloud system software (CSS) is a competitive market within IDC's software taxonomy and a subset of the software-defined compute (SDC) software functional market.
According to Gary Chen, research manager, IDC's Software-Defined Compute, "Cloud system software is the foundational compute element that underpins IaaS clouds. Most of the commercial market is for enterprise on-premise deployments, and while much desired, it is still very complex to deploy and operate. The CSS market is growing steadily, but CSS is also increasingly competing with public cloud and managed/hosted options."