IDC forecasts that spending on public IT cloud services will rise to $72.9 billion in 2015, up from $21.5 billion in 2010 and equivalent to a compound annual growth rate of 27.6 percent. By the end of the forecast period, moreover, one of every seven dollars spent on packaged software , servers and storage offerings will be related to the public cloud model.
However, the overall impact of cloud services will extend well beyond IT spending, because cloud services are increasingly becoming interconnected with and accelerated by other disruptive technologies, including mobile devices, wireless networks, big data analytics , and social networking , noted IDC Senior Vice President Frank Gens.
"Together, these technologies are merging into the industry's third major platform for long-term growth," Gens said. "As during the mainframe and PC eras, the new platform promises to radically expand the users and uses of information technology, leading to a wide and entirely new variety of intelligent industry solutions."
Unlike private cloud deployments, which are dedicated to the access limits and resource-allocation requirements of a specific customer , public IT cloud services are designed for -- and commercially offered to -- a largely unrestricted marketplace of potential users. IDC anticipates that as public clouds mature, they will eventually incorporate many of the capabilities -- particularly security and availability -- that make private clouds the most attractive option for enterprise use today.
Apple's recently announced iCloud initiative is just one example of how the boundaries between personal and business computing will be blurred through the creation of personal cloud experiences across multiple computing devices and peripherals. One continuing challenge for enterprises will be to define the extent to which they will interface with -- and even directly participate in -- the public and personal cloud services arising around them. (continued...)