Link: Gartner Says Worldwide IaaS Public Cloud Services Market Grew 29.5 Percent in 2017

“The worldwide infrastructure as a service (IaaS) market grew 29.5 percent in 2017 to total $23.5 billion, up from $18.2 billion in 2016”
Original source: Gartner Says Worldwide IaaS Public Cloud Services Market Grew 29.5 Percent in 2017