Total spending on IT infrastructure products (server, enterprise storage, and Ethernet switches) for deployment in cloud environments will increase 15.3% year over year in 2017 to $41.7 billion, according to a new forecast from IDC.

Some highlights from IDC’s Worldwide Quarterly Cloud IT Infrastructure Tracker:
- Public cloud datacenters will account for the majority of spending, 60.5%, while off-premises private cloud environments will represent 14.9% of spending. On-premises private clouds will account for 62.3% of spending on private cloud IT infrastructure and will grow 13.1% year over year in 2017.
- Overall, worldwide spending on traditional, non-cloud, IT infrastructure will decline 5.3% in 2017. However, it will still account for the largest share, 57.9%, of end user spending.
- In cloud environments, Ethernet switches will be the fastest growing technology segment at 21.8% year over year growth in 2017, while spending on servers and enterprise storage will grow 17.9% and 10.7%, respectively.
- Long term, IDC expects spending on off-premises cloud IT infrastructure will grow at a five-year compound annual growth rate (CAGR) of 11.7%, reaching $47.2 billion in 2021. Public cloud datacenters will account for 80.4% of this amount.