Abstract
Modernization of monolithic “legacy” mainframe COBOL applications to enable them for modern service- and cloud-centric environments is one of the ongoing challenges in the context of digital transformation for many organizations. This challenge has been addressed for many years by different approaches. However, the possibility of using a pure Open Source Software (OSS)-based approach to run existing transactional COBOL code as part of Java EE-based web applications has just recently been demonstrated by the author. Therefore, in this paper, an overview of the previously proposed Quick Web-Based Interactive COBOL Service (QWICS) is given and its new extension to run message-processing COBOL applications via JMS is described. QWICS runs on Un*x-like operating systems such as Linux, and therefore on most platforms, but in particular on the mainframe itself. This enables a mainframe-to-mainframe re-hosting, preserving the unique features of the mainframe platform like superior availability and security.
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