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A few months ago I was working on a Java application for the banking industry. There were a bunch of hosted services that we had to integrate in our software. We had to use web services, since the SOAP protocol was the bank's standard way to access legacy data, throughout CICS transactions. The bank's middleware department, in fact, has a cluster of WebSphere application servers running the integration layer which allows the applications to communicate with the mainframe using SOAP. This layer is a home-grown integration software using a variety of proprietary protocols to exchange data with COBOL transactions; the raw data is then converted to SOAP messages. This common) approach allows the applications to deal with CICS transactions as if they were web services.
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