Also, they previously had a Subsystem for Unix (SFU/SUA), so they're being consistent with their naming. That was the old POSIX layer that included, IIRC, a she

Also, they previously had a Subsystem for Unix (SFU/SUA), so they're being consistent with their naming. That was the old POSIX layer that included, IIRC, a shell script to wrap cl.exe to take gcc-like arguments, and you can get third-party compiled binaries of things like bash.