Difference Between Incremental Backup Differential Backup Rotational Backup

Incremental Backup: Backup of files that's are NEW or CHANGED Since Last Backup.
Backup Time: It will take the least time.

Differential Backup: Backup of the files, which are NEW or CHANGED Since LAST FULL Backup.
Backup Time : It will take more time compare to Incremental Backup.

Comparison : Incremental Vs Differential
Differential Backup it is middle stage between Full Backup & Differential Backup.
Main Difference is Incremental take backup from Last Backup. Differential take backup from LAST FULL Backup,

FULL BACKUP: Complete Backup of everything.
Backup Time: It will take more time rather than DIFFERENTIAL BAKUP.

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