18.4 Service composition
The underlying principle of service-oriented software engineering is that you compose and configure services to create new, composite services. These may be integrated with a user interface implemented in a browser to create a web application, or they may be used as components in some other service composition. The services involved in the composition may be specially developed for the application, business services developed within a company, or services from an external provider. Both RESTful and SOAP-based services can be composed to create services with extended functionality.
Many companies have converted their enterprise applications into service-oriented systems, where the basic application building block is a ...
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