A new research from In-Stat forecasts that Infrastructure as a Service (IaaS) will grow to $4 Billion by 2015.

Greg Potter, In-Stat Analyst says “Growth is expected in all public cloud service segments. Many SaaS (software-as-a-service) applications have been around for a long time, but only now since the advent of entire platforms for applications, such as Google Apps and Force.com, are these applications gaining the necessary visibility among businesses to gain traction in the software market. Infrastructure-as-a-service is also gaining traction, especially in the small business market.”

The report also forecasts that overall Cloud Computing, which includes IaaS, SaaS and PaaS, will grow by 153% from 2010 to 2015. Businesses with less than one hundred employees will be the fastest growing segment and will reach $6.6 Billion by 2015 and will account for over half the SaaS and IaaS market. For 2011the top 5 industry verticals for IaaS in terms of  market revenue will be hospitality and food, healthcare, social services, and retail trade and the bottom 5 verticals will be mining, forestry, fishing, agricultural services, and utilities.

This research is part of In-Stat’s Cloud Computing and Managed Services Spending Forecast service and provides forecasts of US business spending on managed services with detailed segmentation by product category, size of business, and vertical market.

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