What is a cloud drive?
With a cloud drive it's possible to save your files online. You can select a folder on your PC or Mac which is then synchronized with the cloud. You can have access to your drive from everywhere - from other computers or even from your smartphone or tablet. Your data is safe due to mechanisms like regular backups.
PaperOrganizer uses the basis of the cloud drive of your choice to store files intelligently. It's simply a smart tool that lets you build on all that cloud drives offer. Your documents are stored separately from PaperOrganizer.
Additional information can be found on the websites of the cloud drive providers.