Modernizing legacy systems is one of the toughest and most rewarding challenges in enterprise IT. hands-on lessons from transforming mission-critical mainframe and legacy systems into a modern banking platform serving 50 million customers of the German Sparkasse Finance Group.

From COBOL to Java, from monolithic mainframes to shared services and cloud-native architectures: we explore different modernization strategies and where the mainframe still makes sense today.

A special focus lies on empowering developers. By automating routine tasks, reducing friction in daily work, and improving the developer experience, teams are enabled to actively shape the future of the platform instead of just maintaining the past.