EBS is block-level storage provided by AWS. It can be used as an operating system disk and a data storage disk for EC2 instances. It's network attached storage, which persists independently from your data from the life of the instance. For this, we need to specify it while creating the EC2 instance.
EBS can be used as a separate physical hard drive, where you can specify the filesystem of your own choice after formatting and use the file I/O interface provided by the EC2 instance operating system.
EBS also works as the boot volume for EBS-based AMIs. You can attach multiple EBS volumes to EC2 instances. However, one volume can only be attached to one instance at a time.
EBS also provides you with the ability to create point-in-time snapshots of volumes that are then stored in S3.
Let's see how we can enable data security at the EBS level.