According to IDC’s Worldwide Quarterly Cloud IT Infrastructure Tracker the total cloud IT infrastructure spending (server, disk storage, and Ethernet switch) will grow by 21% year over year to US$32 billion in 2015, accounting for approximately 33% of all IT infrastructure spending, up 28% from 2014.
Private cloud IT infrastructure spending will grow by 16% year over year to US$12 billion, while public cloud IT infrastructure spending will grow by 25% in 2015 to US$21 billion.
Reversal of interest
In 2014, cloud IT infrastructure spending totaled US$26.4 billion. The anticipated growth in public cloud for 2015 is in stark contrast to 2014 when private cloud spend grew 20.7% to reach US$10 billion. Public cloud spending was US$16.5 billion in 2014 but growth was only 17.5% from the year before.
"The pace of adoption of cloud-based platforms will not abate for quite some time, resulting in cloud IT infrastructure expansion continuing to outpace the growth of the overall IT infrastructure market for the foreseeable future," said Kuba Stolarski, Research Manager, Server, Virtualization and Workload Research at IDC. "As the market evolves into deploying 3rd Platform solutions and developing next-gen software, organizations of all types and sizes will discover that traditional approaches to IT management will increasingly fall short of the simplicity, flexibility, and extensibility requirements that form the core of cloud solutions."
For the five-year forecast period, IDC expects that cloud IT infrastructure spending will grow at a compound annual growth rate (CAGR) of 14%; both public cloud and private cloud are expected to grow at the same CAGR. By 2019, IDC expects cloud IT infrastructure spending to be US$52 billion, or 45% of total IT infrastructure spend; public cloud will represent about US$32 billion of that amount, and private cloud will account for the remaining US$20 billion.