Chapter 7. Exploring Platform as a Service
IN THIS CHAPTER
Understanding the PaaS service model
Learning about PaaS development
Viewing examples of PaaS sites and tools
Discovering common PaaS-built application features
The Platform as a Service model provides the tools within an environment needed to create applications that can run in a Software as a Service model. For this reason, some overlap between vendors has created Software as a Service products, and those vendors have broadened their services to make their Web applications more customizable. Salesforce.com, the largest CRM application service company in the world, is an example, with Force.com being its PaaS (Platform as a Service) offering.
Applications developed in PaaS systems can be composite business applications, data portals, or mashups with data derived from multiple sources. PaaS environments can offer integrated lifecycle management or anchored lifecycle applications. An integrated system provides a broad range of tools for customization, whereas an anchored system is based on already established software.
Application frameworks are a particularly powerful tool for creating cloud computing applications. For this reason, many vendor products are based on this model. In other chapters, you learn about Google AppEngine and Windows Azure Platform. This chapter presents several examples of PaaS systems that can create captive hosted applications, portable applications, extended blogs or content management systems, or rich ...
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