Kelly is taking backups of the organization's data.

An incremental backup is a type of data backup that copies only the files that have been created or modified since the last backup operation of any type. This method is efficient because it only backs up data that has changed, which can save on storage space and reduce the time needed to complete the backup. In Kelly’s case, since he is backing up only the new or changed files since the last backup, he is using an incremental backup approach.

References: The explanation aligns with the standard backup methodologies where an incremental backup captures only the changes made since the last backup, which can be either a full or another incremental backup1234.