Use Cases and Deployment Scope
Recently we had an incident where we had security breach and data was deleted by the intruders. So our client wanted to have a backup solution where they can backup all their files as they're in banking/financing sector and those data is very crucial to them. For this I suggested them S3 Glacier as most of our deployment is AWS centric only. So we decided to got with S3 Glacier and we are backing up S3 into Glacier. With this the cost is also reduced to save objects.