In this episode, we sit down with PJ Catalano, IBM Z Test Architect, to discuss his origin story and how he got started in the mainframe space. PJ shares his journey from being a co-op student to becoming a leading expert in mainframe testing. We also dive into the process of testing a Z system, from emulation and simulation environments to hardware and firmware integration testing. PJ explains the importance of testing and how his team's efforts contribute to the reliability and quality of the IBM Z platform. Join us for an in-depth conversation about mainframe testing and the people who make it happen.