Cross region replication
cross-Region replication copies an EC2 instance's AMI and associated EBS snapshots from one Region to another.
AMI
An Amazon Machine Image (AMI) is a supported and maintained image provided by AWS that provides the information required to launch an instance.
Snapshot
EBS Snapshots are a point-in-time copy of your data, and can be used to enable disaster recovery, migrate data across regions and accounts, and improve backup compliance.
