The End of Code-First Modernization: How AI Is Rewriting the Mainframe Playbook

For decades, mainframe modernization followed a costly playbook: migrate code and hope value appears—often recreating legacy complexity on a new platform. The risk today isn’t speed; it’s a slow, costly, code-first approach. AI changes the rules. Instead of starting with millions of lines of code, AI helps organizations understand what applications do and define what should exist next. We’ll show how AI and Pega Blueprint move beyond code-first migration toward a simpler redesign.