Exciting update! My book Don’t Be Afraid of the Mainframe: The Missing Introduction for IT Leaders and Professionals will be published next month!
Keep an eye on the official Launch page for the book.
Helps you understand mainframes
This book is designed to help anyone needing a clear and practical introduction to IBM mainframe technology. Whether you’re a decision maker, architect, or IT professional aiming for a fast and solid understanding of mainframe basics, this guide is made for you.
No jargon
IBM mainframes have powered enterprise computing for decades, yet they remain an enigma to many IT professionals. In this book, I demystify mainframes by explaining their unique architecture, programming, security, modern development practices, and the special financial aspects of mainframes in straightforward language. No jargon overload, just practical insights.
Keep an eye on my updates for the official release, or get in touch if you’re interested by emailing me at ndegreef@seneqa.nl.
Discover how mainframes really work and build your confidence with this essential guide.
You can now preorder the book (ebook or softcover) by emailing Niek de Greef at ndegreef@seneqa.nl.
Your mainframe isn’t the problem. The uncertainty is.
Every year, CIOs and IT executives face the same impossible question: What do we do with the mainframe? Keep it? Replace it? Modernize it? The stakes are enormous—billions in IT spend, decades of business logic, systems that can’t fail—yet clear, vendor-neutral guidance is nearly impossible to find.
Don’t Be Afraid of the Mainframe cuts through the noise with 30+ years of hands-on expertise. Whether you’re deciding the platform’s future or defending its present, this book gives you the information you need to make confident strategic decisions.
You’ll discover:
- Why the mainframe processes 70% of global transactions—and why “legacy” doesn’t mean “obsolete”
- The real economics: where costs hide, how licensing works, and what you can control
- Modern capabilities you didn’t know existed: AI, containers, REST APIs, and cloud integration
- Practical frameworks for assessing your platform, applications, and transformation options
- Honest comparisons: when mainframe makes sense, when cloud is better, and how to integrate both
No sales pitch. No vendor bias. Just clear explanations, real-world case studies, and decision frameworks you can use immediately.