People believe that SaaS applications and their related success in the market are only accepted segment of enterprise cloud computing. However, enterprise cloud computing actually includes building SaaS applications on an application development platform. This is called Platform-as-a-Service.
Application developers use PaaS technology to build both custom applications for individual businesses or vertical industries and horizontal applications to address standard business processes that can be sold to a broad range of potential customers. Application developers include corporate information technology (IT) departments that typically develop applications for a company’s internal use and independent software vendors (ISVs) that develop applications to sell to customers. Traditionally, these developers have needed to purchase, install, test and maintain complex software and hardware infrastructure to develop and deliver their applications. This requirement resulted in more time and resources spent maintaining infrastructure and less time and resources being available to develop applications, with a resulting impact on innovation and productivity levels.
PaaS enables corporate IT developers and ISVs to leverage the benefits of a multi-tenant platform for developing new applications. PaaS allows developers to build applications with a browser and an Internet connection, just as SaaS allows users to use applications through a browser.
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