IBM REXX for z/OS Modernization Guide
IBM REXX for z/OS is a programming language product by IBM. Explore technical details, modernization strategies, and migration paths below.
Product Overview
IBM REXX for z/OS by IBM is a Programming Language + Scripting + Automation solution for mainframe environments.
Key use cases include: z/OS automation scripting, TSO/E command procedure development, ISPF panel and dialog customization, Batch workflow automation, SMF data analysis and reporting.
Modernization Strategies
Rehost
- Timeline:
- 6-12 months
Lift-and-shift to cloud infrastructure with minimal code changes. Fast migration with lower risk.
Refactor (Recommended)
- Timeline:
- 18-24 months
Optimize application architecture for cloud while preserving business logic. Best ROI long-term.
Replatform
- Timeline:
- 3-5 years
Complete rewrite to cloud-native architecture with microservices and modern tech stack.
Frequently Asked Questions
General
What is IBM REXX for z/OS?
IBM REXX (Restructured Extended Executor) for z/OS is the standard scripting and automation language for the z/OS platform.
Who makes IBM REXX for z/OS?
IBM REXX for z/OS is developed and maintained by IBM. It runs on z/OS platforms.
What are the main use cases for IBM REXX for z/OS?
z/OS automation scripting, TSO/E command procedure development, ISPF panel and dialog customization, Batch workflow automation, SMF data analysis and reporting
How does IBM REXX for z/OS work?
REXX is used extensively for TSO/E command procedures, ISPF panel customization, batch JCL automation, system administration scripting, and SMF data processing. z/OS includes both the classic REXX interpreter and the compiled REXX compiler for performance-critical applications.
Technical
What platforms does IBM REXX for z/OS support?
IBM REXX for z/OS supports the following platforms: z/OS.
What are the alternatives to IBM REXX for z/OS?
Competing products include: CLIST, Python for z/OS, z/OS UNIX shell scripting.
How complex is IBM REXX for z/OS to implement?
IBM REXX for z/OS has a low technical complexity level with a low learning curve. It is best suited for mid-market|enterprise organizations.
Deployment & Industries
How is IBM REXX for z/OS deployed?
IBM REXX for z/OS supports the following deployment models: on-premise.
What industries use IBM REXX for z/OS?
IBM REXX for z/OS is primarily used in: Banking, Finance, Insurance, Government, Healthcare, Retail, Telecommunications.
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