Ibm Adcd Zos May 2026

The z/OS operating system has its roots in the 1960s, when IBM introduced the System/360 mainframe. Since then, the operating system has undergone significant transformations, with each new iteration building on the strengths of its predecessors. In 2000, IBM introduced z/OS, which was designed to take advantage of the 64-bit zSeries mainframes. The latest version, z/OS 2.4, released in 2020, offers enhanced security, improved performance, and increased support for modern workloads.