Microsoft added a scalable UI API back in 2006. No one used it. WinRT works almost the same as Windows Presentation Foundation did when it came out in 2006.
John Savill's Hyper-V Master Class
Join John Savill for 12 hours of comprehensive Hyper-V training. This master-level online training course will explore all the key aspects of a Hyper-V based virtualization environment covering both current capabilities in Windows Server 2012 R2 and looking at the future with Windows Server vNext.