What is saved during an incremental backup?

An incremental backup focuses on efficiency by saving only the data that has changed since the last backup, whether that last backup was incremental or a full backup. This method significantly reduces the amount of storage space needed and shortens the time required to complete the backup process compared to methods that might save the entire data set or all files. By saving just the changes, incremental backups allow for quicker recovery and less redundancy in the backup system. This is especially useful in environments where data changes frequently and allows for efficient use of resources.