Red Hat OpenShift 4.21: Smarter Scaling, Faster Migration, And AI-Powered Efficiency
Red Hat, March 23,2026
Red Hat OpenShift 4.21 is designed to run AI training jobs, containerized microservices, and virtualized applications on your private, hosted, or hybrid infrastructure.
With this new release, you can modernize your IT infrastructure and accelerate innovation on a single platform that scales with your business demand. A lot of work has gone into improving upon the previous 4.20 release without disrupting your daily routine, so there's a lot to explore. Here's a quick overview of all the new features in OpenShift 4.21.