Instance Store: Physically attached to EC2 instance
Ephemeral storage - Temporary data (Data lost - hardware fails or instance
termination)
CANNOT take a snapshot or restore from snapshot
Use case: cache or scratch files
Elastic Block Store (EBS): Network Storage
More Durable. Very flexible Provisioned capacity
Increase size when you need it - when attached to EC2 instance
99.999% Availability & replicated within the same AZ
Use case : Run your custom database