Modernizing AS/400 Systems for Cloud-Based Business Platforms

Many organizations still rely on AS/400 and other legacy platforms that remain critical to operations but constrain integration, scalability, and cloud adoption. This example shows how legacy environments can be modernized by migrating data and selected functionality into a cloud-based system while preserving essential business logic. Key considerations include extracting and transforming legacy data, maintaining integrity during cutover, and ensuring interoperability with modern services. A phased rollout with pilot testing helps reduce disruption and validate outcomes before broader migration. For technology leaders, AS/400 modernization is often about controlled evolution toward integration-ready, cloud-aligned platforms—not a “big bang” replacement.