What really chaps my bums is when peeps use Windows computer, MacBook, and Android smartphone and expects everything to work and sync everything seamlessly. Ain't gonna happen. If it does, it's a ***** to manage and work with. MS is making great strides with OneDrive though. DropBox, Box, Mega...all great solutions also.
OK, so I guess this means I "chap your bum". Throw in iPads and Android tablets as well. And yes, they all work together, and seamlessly I might add. I'll wager it is a much more complete and hassle-free system than those using Microsoft-only, "complete" being the main distinction here.