According to the International Data Corporation (IDC) the analysts expects that spending on IT infrastructure for cloud environments will grow at a 12.5% four-year compound annual growth rate (CAGR) to $2,7 trillion in 2020. This will represent 47.9% of the total spending on enterprise IT infrastructure in 2020. Spending on non-cloud IT infrastructure will decline at a 1.3% CAGR during the same period. Within the cloud segment, spending on public and private cloud IT infrastructure will experience CAGRs of 13.8% and 10.2%, respectively. In 2020, IDC expects service providers will spend $33 billion on IT infrastructure for delivering public cloud services, while spending on private cloud IT infrastructure will reach $20.3 billion.