When you take a snapshot of any of your EBS volumes, the backups are stored redundantly in multiple Availability Zones using Amazon S3

Explanation

When you take a snapshot of any of your EBS volumes, the backups are stored redundantly in multiple Availability Zones using Amazon S3. This aspect of storing the backup in Amazon S3 is handled by AWS, so you won’t need to interact with Amazon S3 to work with your EBS snapshots. You manage them in the Amazon EBS console, which is part of the Amazon EC2 console.