Driving the Future of Mainframe Innovation | Joshua Stiles

Products
- Our Products
  - VERIFIⁿ
    JCL Code Delivered Production-Ready
  - OPTIMAⁿ
    The next generation of mainframe performance analytics
  - SENTINELⁿ
    Comprehensive change management tool for z/OS
  - STRATUSⁿ
    Cloud object storage for z/OS
  - Tape/Assist®
    Seamlessly migrates z/OS tape data
  - TRANSVERSEⁿ
    End-to-end, non-disruptive z/OS data migration
  - VECTORⁿ
    Modern, simplified dataset transfers
- What's Next
  - SOLISⁿ
    Curated live mainframe data, made ready for AI
- Trusted IBM Partner
  - IBM Product Portfolio
- 21CS Partners
  - Global Partnerships
VERIFI Intro & VS Code

Catch JCL errors before you submit. VERIFIn now validates JCL inside VS Code, so you fix problems ...
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VSEⁿ
- Our Platform
  - VSEⁿ
    The trusted VSE platform you've known, renewed and reinvested
VERIFI Intro & VS Code

Catch JCL errors before you submit. VERIFIn now validates JCL inside VS Code, so you fix problems ...
Learn More
Solutions
- Our Solutions
Talk to a Mainframe Expert

Partner with experts who understand mainframe challenges and opportunities.
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Resources
- Articles
- Events
Why 21CS

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A First Look at OPTIMAn's New Reporting Interface
Introducing the New Reporting Interface If you've been following recent news from 21CS, you already know we released OPTIMAn, our premier performance, capacity, and cost tool. What you haven't seen...

Real Time Performance & Cost Control
August 6, 2026