I can boot into Mac, or I can boot into Windows, and that's pretty limited. Out of the box, Macs have a tool called Boot Camp that allows users to install Windows 10 int a separate partition.
I use it quite a lot in fact, and while I could have a separate system, I find that my Mac is the best Windows 10 machine I can buy. I switched my daily driver system from Windows to Mac what feels like eons ago, but that doesn't mean that I don't still need to use Windows 10.
