Microsoft's CVP of Design, Windows, and Devices, Ralf Groene, just announced his retirement after 17 years of service. He'll be remembered for his contributions to Microsoft Surface tablets and design for Windows and Xbox OS experiences.

source https://www.windowscentral.com/hardware/surface/microsoft-veteran-designer-ralf-groene-retires-from-the-surface-department-after-17-years-of-service