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Software As a Service in the Cloud


Architecting and building a Software as a Service application requires solving a series of problems that are independent of a particular software platform. First, a SaaS architecture follows directly from the fundamental principles of the business model. Second, a series of difficult technical problems must be solved in addition to providing the business functionality. These include certificate security, low-IT-capable clients, business continuity when connectivity is lost, provisioning of services, scalability as the number of clients increase, database design for clients, how to use virtualization, and how to integrate and release service functionality over several different client applications. Third, you have to effectively use the platform technology such as WCF and ASP.NET. If you approach building a SaaS application on these three levels, you can then leverage your work into new platforms such as Windows Azure.

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