When I started programming in the 80s, the situation was simple: data was written to a file on a local disk. If files needed to be exchanged, a floppy disk was simply inserted into another computer and edited.Later, floppy disks and CD drives disappeared and files were either exchanged by e-mail or the data was stored directly on a server. Even Microsoft Word moved to the cloud at some point.However, moving data from the local computer to the cloud created new problems. What if the provider clos...