When recovering the workstations, would customer need to re-install Microsoft Windows OS and applications again?

If customer backup the FULL MACHINE of the desktop. Then they do not need to re-install OS or Office. They basically can boot up the Desktop with an ISO Disk, and can start to restore the whole Hard Disk image. This can be restored to original device, or another new device.

 

As you can see in this screen shoot. We can choose what to backup when setting up the Backup Plan.