During the period from 2011 through 2014, the worldwide cloud market is estimated to grow 126.5 percent, driven by 119 percent growth in SaaS and 122 percent growth in IaaS.

GigaOM Pro’s cloud computing analyst Rob Defrancesco takes an in-depth look at each of the three areas of cloud computing — Software-as-a-Service, Infrastructure-as-a-Service and Platform-as-a-Service — using examples of companies like Salesforce.com and LivePerson to detail each sector.

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