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Mainframe Modernization: Proprietary GenAI vs. Open DevOps Architecture Compared

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A technical analysis by Nivedita Mukherjee examines two competing approaches to mainframe modernization: proprietary GenAI-based code abstraction and an open DevOps architecture built on standard enterprise tooling. The open architecture model relies on three core components — Endevor Web Services for REST API-based lifecycle governance, Jenkins for declarative pipeline orchestration, and Zowe CLI for secure command-line communication with z/OS environments. Together, these layers aim to eliminate manual ISPF green-screen interventions and align mainframe workflows with modern DevOps practices. The paper also explores an alternative Git-based integration path via Endevor Bridge for Git, allowing developers to work locally and sync changes to the mainframe through pull requests. Cost implications, measured in MIPS consumption, are identified as a critical factor in choosing between the two modernization paths.

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Mainframe Modernization: Proprietary GenAI vs. Open DevOps Architecture Compared · ShortSingh