Cloud IT infrastructure spending — server, storage, and Ethernet switch — will grow 26.4 percent to $33.4 billion in 2015.
IDC said cloud IT infrastructure spending will account for one third of all IT infrastructure spending in 2015 against 28.1 percent in 2014.
Private cloud IT infrastructure spending will grow 16.8 percent to $11.7 billion, while public cloud IT infrastructure spending will grow 32.2 percent to $21.7 billion. In comparison, spending on non-cloud IT infrastructure will remain flat at $67 billion.
In most regions, growth in public cloud IT infrastructure spending will exceed growth in spending on private cloud IT infrastructure as public cloud service providers will continue to invest in expansion of their datacenters and service offerings.
Cloud IT infrastructure spending will grow at a compound annual growth rate (CAGR) of 15.6 percent and will reach $54.6 billion by 2019 accounting for 46.5 percent of the total spending on IT infrastructure.
Spending on non-cloud IT infrastructure will decline at 1.4 percent CAGR. Spending on public cloud IT infrastructure will grow at 16.5 percent vs 14 percent CAGR. In 2019.
Cloud service providers will spend $35.3 billion on IT infrastructure for delivering public cloud services, while spending on private cloud IT infrastructure will reach $19.2 billion.