The Elastic Block Store (EBS) service is AWS's answer to block-level storage and is used as persistent, reliable, and highly available storage that is attached to your EC2 instances. EBS offers built-in encryption options that allow you to easily implement encryption for data stored on these volumes. Due to the importance and criticality of data protection, EBS supports encryption across all EBS volumes types and ensures that there is no negative performance impact relating to your IOPS of the volume. Do be aware, however, that although encryption is possible across all volume types, it is not available across all instance types within those volume types.
For an up-to-date list of available instances, please go to the following link: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSEncryption.html#EBSEncryption_supported_instances.
One key point in understanding...
