Save your files in OneDrive folders and you'll be able to get to them from any PC, tablet, or phone.
OneDrive is free online storage that comes with your Microsoft account. Enabling this feature sets the following registry key value to 2. If you meet the Windows and OneDrive sync app requirements and still can't see the Files On-Demand option under 'Settings', make sure the service 'Windows Cloud Files Filter Driver' start type is set to 2 (AUTOSTART).