Modernizing an integration solution

This section uses an example to illustrate how an existing integration solution that has grown over time can be modernized using SOA methods, and the scenarios from the previous sections.

The example is a simplified version of a specific customer project in which an existing solution was modernized with the help of SOA.

The task of the integration solution is to forward orders entered in the central ERP system to the external target applications.

Initial situation

The current solution is primarily based on a file transfer mechanism that sends the new and modified orders at intervals to the relevant applications, in the form of files in two possible formats (XML und CSV). The applications are responsible for processing the files independently.

At a later date, another application (IT App in the following diagram) was added to the system using a queuing mechanism, because this mechanism allowed for the guaranteed exchange of messages with the application by...