Vendor revenue from sales of infrastructure products (server, enterprise storage, and Ethernet switch) for cloud IT, including public and private cloud, grew 48.4% year over year in the second quarter of 2018 (2Q18), reaching $15.4 billion, according to IDC’s Worldwide Quarterly Cloud IT Infrastructure Tracker.
IDC also raised its forecast for total spending (vendor recognized revenue plus channel revenue) on cloud IT infrastructure in 2018 to $62.2 billion with year-over-year growth of 31.1%.

Some highlights:
- Quarterly spending on public cloud IT infrastructure has more than doubled in the past three years to $10.9 billion in 2Q18, growing 58.9% year over year.
- By end of the year, public cloud will account for the majority, 68.2%, of the expected annual cloud IT infrastructure spending, growing at an annual rate of 36.9%.
- In 2Q18, spending on private cloud infrastructure reached $4.6 billion, an annual increase of 28.2%. IDC estimates that for the full year 2018, private cloud will represent 14.8% of total IT infrastructure spending, growing 20.3% year over year.
- The combined public and private cloud revenues accounted for 48.5% of the total worldwide IT infrastructure spending in 2Q18, up from 43.5% a year ago and will account for 46.6% of the total worldwide IT infrastructure spending for the full year.
- Spending in all technology segments in cloud IT environments is forecast to grow by double digits in 2018. Compute platforms will be the fastest growing at 46.6%, while spending on Ethernet switches and storage platforms will grow 18.0% and 19.2% year over year in 2018, respectively. Investments in all three technologies will increase across all cloud deployment models – public cloud, private cloud off-premises, and private cloud on-premises.
- The traditional (non-cloud) IT infrastructure segment grew 21.1% from a year ago, a rate of growth comparable to 1Q18 and exceptional for this market segment, which is expected to decline in the coming years. At $16.4 billion in 2Q18 it still accounted for the majority, 51.5%, of total worldwide IT infrastructure spending. For the full year, worldwide spending on traditional non-cloud IT infrastructure is expected to grow by 10.3% as the market goes through a technology refresh cycle, which will wind down by 2019. By 2022, we expect that traditional non-cloud IT infrastructure will only represent 44.0% of total worldwide IT infrastructure spending (down from 51.5% in 2018). This share loss and the growing share of cloud environments in overall spending on IT infrastructure is common across all regions.
- All regions grew their cloud IT Infrastructure revenue by double digits in 2Q18. Asia/Pacific (excluding Japan) (APeJ) grew revenue the fastest, by 78.5% year over year. Within APeJ, China’s cloud IT revenue almost doubled year over year, growing at 96.4%, while the rest of Asia/Pacific (excluding Japan and China) grew 50.4%. Other regions among the fastest growing in 2Q18 included Latin America (47.4%), USA (44.9%), and Japan (35.8%).