In a move that signals the mainframe’s continued evolution and relevance, IBM has announced a strategic collaboration with Arm to develop dual-architecture hardware for IBM Z Mainframes. This partnership brings together two giants of the computing world and could reshape how enterprises think about infrastructure for years to come.

What Was Announced?

IBM announced a strategic collaboration with Arm to develop new dual-architecture hardware that helps enterprises run future AI and data-intensive workloads with greater flexibility, reliability, and security.

At the heart of this collaboration is a first-of-its-kind chip that allows Arm instructions to run side by side with IBM’s own z/Architecture. The new dual-architecture chip is expected to launch in 2027 alongside the next generation of the IBM Z Mainframe.

Why Does This Matter?

For decades, a persistent narrative claimed that the mainframe was a dying platform. This announcement puts that story to rest once and for all. The IBM Z Mainframe has long been the backbone of global enterprise computing and today it supports 71% of the world’s largest companies, processes 68% of global data, and handles 90% of all card transactions. The collaboration with Arm is the latest step in ensuring that this platform continues to lead well into the future.

The Arm architecture has rapidly gained ground across the computing industry. Cloud providers like AWS (Graviton), Microsoft Azure (Cobalt), Google (Axion), and Oracle Cloud (Ampere) have all made heavy investments in Arm, and Arm-based servers captured approximately 40% of the server market share in 2025. Many AI-related solutions are being deployed on Arm servers, driving software vendors to increasingly port their products to the platform.

By integrating Arm support into IBM Z, the Mainframe becomes accessible to a whole new generation of workloads and customers, while existing customers retain full backward compatibility with z/Architecture, with no code changes required.

Three Pillars of the Collaboration

The collaboration is focused on three key areas:

•        Expanding virtualization technologies that allow Arm-based software environments to operate within IBM’s enterprise computing platforms, broadening software compatibility and streamlining how developers bring Arm applications into mission-critical environments.

•        Exploring new ways to support the performance and efficiency demands of modern workloads, including AI and data-intensive applications, enabling enterprise systems to execute Arm applications while aligning with the reliability, security, and operational requirements enterprises need.•        Long-term ecosystem growth by creating shared technology layers between platforms, IBM and Arm aim to open the door to broader software ecosystems and greater flexibility in how applications are deployed and managed.

What This Means for IBM Z Customers

For organizations already running on IBM Z, this development is straightforward good news. Technologies such as z/TPF, z/OS, and Linux continue to work exactly as before, with over 60 years of backward compatibility fully preserved. At the same time, the expanded Arm support means that new workloads, including modern AI applications, can now be brought onto the platform and benefit from the Mainframe’s unmatched resiliency, availability, and security.

Gartner projects that by the end of 2029:

•        25% of existing mainframe customers will extend their usage to Arm-based deployments.

•        50% of new-logo mainframe customers will be using Arm-based capabilities on the platform.

These numbers reflect a platform that is not just maintaining its position but actively growing its footprint in the enterprise landscape.

The Mainframe Is Not Standing Still

IBM’s leadership in system design, from silicon to software and security, has helped enterprises adopt emerging technologies with the scale and reliability required for mission-critical workloads. As AI moves deeper into core business operations, IBM continues to invest in hardware platforms such as the Telum II processor and Spyre Accelerator, which are designed to bring AI from experimentation into everyday enterprise use.

The IBM-Arm collaboration is a natural continuation of this trajectory. For students and professionals following the mainframe space, this is a clear signal: IBM Z is actively expanding into the architectures and workloads that define modern computing, and the skills built around this platform are more future proof than ever.

Sources

IBM Newsroom: IBM Announces Strategic Collaboration with Arm to Shape the Future of Enterprise Computing: https://newsroom.ibm.com/2026-04-02-ibm-announces-strategic-collaboration-with-arm-to-shape-the-future-of-enterprise-computing

Gartner: First Take: The IBM-Arm Z Chip Collaboration Shows That Mainframes Are Still Going Strong, Alessandro Galimberti & Daniel Bowers, G00853557 (2 April 2026)