The definition of ‘application' is rapidly changing. As the industry is moving from using an application-centric architecture to a Service Oriented Architecture (SOA), the focus for building functionality is moving to Service Oriented Business Applications (SOBA). This means that applications are a set of services and components working together in fulfilling a certain business need. The technology, specifications, and standards for specifying these components and services may vary, and most often religious discussions are going on about the usefulness of each of them.

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