Here are the following benefits of using Amazon EBS (in case you need a quick cheat sheet).
High availability: When you create an EBS volume, it is automatically replicated within its Availability Zone to prevent data loss from single points of failure.
Data persistence: The storage persists even when your instance doesn’t.
Data encryption: All EBS volumes support encryption.
Flexibility: EBS volumes support on-the-fly changes.
You can modify volume type, volume size, and input/output operations per second (IOPS) capacity without stopping your instance.
Backups: Amazon EBS provides you the ability to create backups of any EBS volume.