PaaS: Platform as a Service Definition & Benefits - Salesforce
http://go.microsoft.com/fwlink/?LinkID=617350
WEBPlatform as a service (PaaS) is a proven model for running applications without the hassle of maintaining on-premises hardware and software infrastructure at your company. Enterprises of all sizes have adopted PaaS solutions like Salesforce for simplicity, scalability, and reliability.
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