Amazon FSx for NetApp ONTAP now supports SnapLock, an ONTAP feature that prevents data from being modified or deleted for a specified retention period by transitioning files to a write once, read many (WORM) state. FSx for ONTAP is the first and only fully managed file storage service in the cloud offering WORM protection. You can use SnapLock to meet regulatory compliance, protect business-critical data from ransomware, and prevent accidental or malicious attempts at alteration and deletion of data.
Source:: Amazon AWS