This IDC Pivot Table includes IDC's 2012 forecast for public cloud services, covering the period 2011–2016, in the context of overall IT spending for the same period. An overview of the cloud services forecast is presented alongside market sizing and forecasts for on-premise hardware (servers and storage) and packaged software, by region, aligned with the 2Q12 version of the Worldwide Black Book. It therefore provides analysis of cloud services penetration in relation to traditional IT spending.