Global quarterly spending on datacentre hardware and software has grown by just five percent during the past 24 months, while spending on the public cloud portion of that has grown by 35 percent, according to data from Reno-based Synergy Research.

It says the private cloud infrastructure market has also grown, though not as strongly as public cloud, while spending on traditional, non-cloud datacentre hardware and software has dropped by 18 percent.

Meanwhile, original design manufacturers (ODMs) are accounting for the largest portion of the public cloud market, with Cisco being the leading individual vendor, followed by Dell EMC and Hewlett Packard Enterprise, Synergy says.

The second-quarter market leader in private cloud was Dell EMC, followed by HPE and Microsoft, with the same three vendors leading in the non-cloud datacentre market, though with a different ranking.