The use of tools from Redmond to get your software work done.
I recall about two years ago, I wanted to get some programs in the Microsoft store. Had to learn about Windows 8. Even bought and installed a copy of the Win 8 operating system. I studied and practiced how to write a Windows 8 app and get it published. Hurray.
Turns out it is a lot easier these days to publish to the Windows Store. You can even deploy a normal Windows application. This one guy I read about pushed his VB6 application into the store. Can you believe it? Microsoft is making it easy.