I found this question/solution related to programming OneDrive like extension:
Creating a special folder in Windows Explorer like DropBox or OneDrive
Is it possible to do it in a way that files don't use up local disk space (like they do in OneDrive)? So to have them displayed just by syncing headers/properties and actually downloading the whole file from the cloud when user wants to read/edit it?
*goal: a cloud (shared drive) solution with several TBs in capacity. If files were to be synced then it's no use on laptops (limitation with SSD size)...