When you first install Client support, it is likely that most, if not all,
of your existing CICS® on System/390® transactions use 3270 data streams. To migrate
to client/server solutions in a staged manner, you could use the following
sequence:
- Use the Client 3270 emulator to run, unchanged, existing CICS on System/390 3270
applications.
- Use the EPI to add graphical user interface (GUI) front ends to existing CICS on System/390 3270
applications.
- Use the ECI to develop new client/server applications in which the display
and processing logic is appropriately split between the client and the server.
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