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Enterprise Application integration (EAI), also integration of application of enterprises (UAI), is a concept for the enterprise-far integration of the business functions along the creation of value chain, which are distributed on different platforms over different applications, and which can be connected in the sense of the data and business process integration.
The different methods
construct one on the other.
EAI covers planning, the methods and the software, in order to integrate heterogeneous, autonomous application systems - if necessary including external application systems - process orientated. EAI is thus the process orientated integration of application systems in heterogeneous IT-Anwendungsarchitekturen.
Contrary to other integrated-circuit techniques, like the function integration or the data integration, with the EAI beginning the implementations of the individual business functions are not changed. All functional interfaces are abstracted by means of Adaptoren (interface converter).
On the connecting Business bus, also as integration platform designation, dynamically evaluated rules and descriptions of process ensure for the fact that the data of a business case in the correct succession are passed on to the individual functions handed over and the results.
Substantially for this kind of the integration, which one draws also as coupled (English: loosely coup LED) designation, is the strict separation from business process logic and business functions. In addition the individual business processes are divided into macro and expirations of micro. The expirations of micro are partially in the functions integrated thereby, since with the use of standard software an extracting is not possible in particular.
In contrast to the pure interface adaptation by classical middleware EAI offers also the possibility of illustrating process logic. Today's middleware products offer however in many cases also a Process engine to Businesses, in order to illustrate the business logic, as represented in the Business bus.
Due to the process orientated integration EAI does not only represent now a technical integration platform, but - so at least the conceptional requirement - also an integration component between organization architecture with the structures and business processes and the IT-architecture of an enterprise.
EAI finds practically within all ranges of the process integration in particular in the E-Business and in portals application, since it is a condition for the necessary Straight Through processing. Beyond that EAI in many large enterprises replaces classical middleware products with complex IT-landscapes and becomes an important IT-architecture-element.
In practice one differentiates thereby
The most important EAI manufacturers and their platforms in accordance with Gartner Group:
Open SOURCE of projects for EAI:
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