“Cloud computing” has dramatically changed how business applications are built and run. At its core, cloud computing eliminates the costs and complexity of evaluating, buying, configuring, and managing all the hardware and software needed for enterprise applications. Instead, these applications are delivered as a service over the Internet.
Cloud computing has evolved to include platforms for building and running custom applications, a model known as “platform as a service” (PaaS). PaaS applications are platforms to write and create your own software as a service (SaaS) solutions. One popular example of a PaaS is VMware’s Cloud Foundry. This software allows developers to quickly deploy Java Spring applications on your choice of cloud service providers, and is a full featured, open PaaS service that enables customers to build and deploy applications on multiple frameworks and multiple clouds.
Article Source: http://EzineArticles.com/7012086