The IBM mainframe endures as both a concept and commercial system for several factors, but chief among them is the architectureâs inherent flexibility. That has allowed IBM to craft new offerings that offer the modernâs mainframeâs essential availability, scalability, performance and security features. It also includes support for open technologies in often highly variable packages. Among these is IBMâs LinuxONE, an enterprise-grade platform with mainframe-class features built for hybrid cloud environments and modern businesses. LinuxONE solutions are optimized for open-source architectures, including Red Hat OpenShift, Kubernetes and IBM Cloud Pak. The new LinuxONE III Express that IBM announced this week delivers on all of these points but also takes the platform in a considerably different, even radical, direction in terms of configurations and focus markets. Letâs look at that more closely.