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Based on a real-life scenario, this paper demonstrates how enterprise architecture can be used to identify and model services required from a business perspective. These services can then be used in the composition and execution of processes. This approach guarantees that services provide concrete business value and can be reused. With this paper, one has implemented such a service using Oracle ESB by composing multiple, already available adapters and routing services into a flow used for processing invoices. This is done based on open standards such as Web services and various other Java and XML-related standards.
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