Synchronization is the process of setting up consistency among files from two distinct locations, a source and a target one. Users will also be able to constantly update data over time.
Folder synchronization can be suitable for home backups on external HDDs or on USB flash drives.
There are dedicated software applications which prevent copying already identical data or overwriting files with the same name, so a lot of time can be saved.
Folder synchronization can also be performed automatically, whenever the content of a monitored folder is modified.