Enterprise Services Architecture
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ESA
Enterprise Services Architecture enables the design of a complete solution for a process – leveraging existing systems and applications while accelerating the deployment of new functionality.
A crucial aspect is the composite application framework, which allows the integration of new and existing functionality into processes that can be configured and reconfigured across the value chain.
The composite application framework contains the tools, methodologies, rules, and patterns that allow SAP and its partners to develop "snap-on" processes efficiently.
Source: "Enterprise SOA - Designing IT for Business Innovation", Dan Woods and Thomas Mattern, O'Reilly Media Inc., April 2006