A Microsoft file hosting and synchronization service.
Looking at the replies to my recent rant against MS's total inability to provide a fully functioning Outlook 365 and in particular sharing folders from Onedrive, which hasn't functioned for over 4 months and the reply regarding bugs affecting the system, brings to mind a very simple idea.
Maybe MS should allow the programmers to play in the "sand box" rather than trying any upgrades out in it, as certainly MS seem incapable of maintaining the core requirements of what they provide and actually sell to us in the first place.