You can now hibernate newly-launched EBS-backed Amazon EC2 I3, M5ad, and R5ad instances. Hibernation provides you with the convenience of pausing your workloads and resuming them later from the saved state. Hibernation is just like closing and opening your laptop lid — your application will start right from where it left off. By using hibernation, you can maintain a fleet of pre-warmed instances that can get to a productive state faster without modifying your existing applications.
Source:: Amazon AWS