In this session, we present how SDK successfully modernized its mainframe infrastructure by upgrading to VSEn and introducing a new IBM Z16 alongside a DS8910F storage solution. Working closely with Living Mainframe, SVA and 21CS, the project ensured a stable, secure operational foundation while paving the way for future IT modernization initiatives. We will share key project insights, the strategic benefits of the infrastructure update, and how this modernization strengthens the resilience and agility of SDK's IT environment.