The World Still Runs On Mainframes
IBM Think, Thursday, June 4th, 2026
Mainframes process 87% of global transactions and remain essential for modern enterprises despite common misconceptions about their obsolescence.
Mainframes, particularly IBM Z systems, power 87% of the world's transactions and are used by 44 of the top 50 banks and major retailers, yet remain misunderstood by the general public.
Despite myths that they are outdated technology being phased out, mainframes seamlessly support modern programming tools like Python and Git while handling massive transaction volumes with unparalleled reliability and security.
Enterprises attempting to migrate away from mainframes often fail because the sheer volume and complexity of interconnected data make wholesale migration a physical and financial impossibility, as noted in a Gartner study projecting 75% of mainframe exit vendors will pivot or cease operations by 2030.
Mainframes provide a unified, centralized approach to managing work at scale that would become chaotic if distributed across thousands of small servers, making them indispensable for critical financial and commercial operations.