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Publisher Summary This chapter presents a case study, which describes a pilot modernization project at a major US company and includes a description of the modernization methods, technologies, and processes employed in the project. The software environment was written in PowerBuilder and COBOL, which was generated by a fourth generation language code generator (4GL). The entire environment was deployed on an IBM mainframe. The pilot project encompassed the investigation, planning, and a proof of technology test to move (or retire) applications from the technology stack using an iterative, phased approach that encompasses multiple methods of conversion. Although this was considered a pilot project, the intent from the beginning and throughout the work effort was to deploy a production-ready application at the end of the pilot phase and deactivate the corresponding mainframe software that was being migrated. The effort began in 2007 and various implementation tasks are continuing as of this writing. The overall effort involved an analysis of options and approaches, development of certain target architecture technologies to support the migration, onsite system preparation and packaging, offsite software conversion, onsite software validation and user acceptance testing, and final deployment. The pilot conversion of the 4GL code and PowerBuilder code was completed successfully for a small, self-contained application module and a subsequent follow-on expanded application undertaken in 2007 and 2008. |
