The EC2 Hibernation feature is now available in the Middle East (Bahrain) AWS Region. Hibernation gives you the ability to launch EC2 instances, set them up as desired, hibernate them, and then quickly bring them back to life when you need them. Applications pick up exactly where they left off instead of rebuilding their memory footprint. Using hibernate, you can maintain a fleet of pre-warmed instances that can get to a productive state faster, and you can do this without modifying your existing applications.
from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/11/ec2-hibernation-feature-available-to-customers-middle-east-bahrain-region/