IBM z mainframes are the IT backbone of our digital economy. These are machines designed for zero downtime (that's where the "z" comes from), maximum security, with impenetrable features in both software and hardware, and capable of processing massive data (more than 9 out of 10 credit card operations are secured by z machines). These unsung heroes of our everyday financial activities lay hidden behind closed doors, but we design them with a strict user-first approach. The new z15 is an example of how industrial design and engineering have paired performance, build quality, and brand alignment.