2.3.5 Configurations that allow linkage to other systems
This subsection explains system configurations in which Application Server links to other systems. As typical examples of such system configurations, this subsection describes the characteristics of the following configurations: 1) configuration where the back end connects to other systems, 2) configuration where the front end connects to other systems, and 3) configuration that uses WebSphere MQ to connect to other systems.
- Configuration where the back end connects to other systems
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In this configuration, Application Server at the front end receives requests, and accesses business systems at the back end. Application Server can be loosely coupled with existing systems by using interfaces such as SOAP, CORBA, and REST.
![[Figure]](GUID-FC83FDC4-C8AC-4565-A9F9-28D513268EC1-low.gif)
- Configuration where the front end connects to other systems
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In this configuration, upon receiving requests from existing systems, Application Server at the back end executes jobs. Application Server can be loosely coupled with existing systems by using interfaces such as SOAP and REST.
![[Figure]](GUID-A1F42D71-2ECB-4AA3-AB28-D0D96DDEF69E-low.gif)
- Configuration that uses WebSphere MQ to connect to other systems
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In this configuration, WebSphere MQ resource adapters are deployed on Application Server to connect to WebSphere MQ. Application Server can link to existing systems that have the WebSphere MQ interface.
![[Figure]](GUID-D1D2F43D-8958-404A-BF3D-D9B46C51A89E-low.gif)