new what's new for backup ga

Author: b-ahibbard

articles/azure-netapp-files/whats-new.md

@@ -18,7 +18,11 @@ Azure NetApp Files is updated regularly. This article provides a summary about t
 
 * [Azure NetApp Files backup](backup-introduction.md) is now generally available (GA).
 
-    You still must register the feature before using it for the first time. 
+    Azure NetApp Files online snapshots are enhanced with backup of snapshots. With this backup capability, you can offload (vault) your Azure NetApp Files snapshots to a Backup vault in a fast and cost-effective way, further protecting your data from accidental deletion. 
+     
+    Backup further extends Azure NetApp Files’ built-in snapshot technology; when snapshots are vaulted to a Backup vault only changed data blocks relative to previously vaulted snapshots are copied and stored, in an efficient format. Vaulted snapshots however are still represented in full and can be restored to a new volume individually and directly, eliminating the need for an iterative full-incremental recovery process.   
+
+    This feature is now generally available in all [supported regions](backup-introduction.md#supported-regions). 
 
 ## April 2024