The worldwide public cloud market is projected to grow 18.5% this year to $131 billion, up from $111 billion last year, according to Gartner.
That number includes a 47.3% jump in Infrastructure-as-a-Service to $9 billion. IaaS was up 42.4% to $6.1 billion last year.
Gartner expects $677 billion to be spent on cloud services between 2013 and 2016 and estimates that $310 billion of that will go for cloud-based advertising. Cloud advertising was 48% of the total market last year.
Gartner found that business process services was the second-largest segment last year, accounting for 28% of the cloud market, followed by Software-as-a-Service at 14.7%, cloud system infrastructure at 5.5%, cloud management and security services at 2.8% and Platform-as-a-Service at 1%.