A company runs applications on Amazon EC2 instances in one AWS Region and wants to back them up to a second Region. The company also wants to be able to provision EC2 resources in the second Region and manage the instances centrally from one AWS account. Which solution meets these requirements MOST cost-effectively?

AWS Backup provides a centralized, managed service for backing up AWS resources, including EC2 instances. Configuring cross-Region backup within AWS Backup is the most cost-effective solution because it automates the backup process, including snapshot creation and replication to the target Region, without requiring manual intervention or the provisioning of additional EC2 instances in the DR Region unless a recovery is needed. This approach minimizes operational overhead and only incurs storage costs for the backups. Incorrect options: Provisioning a similar number of EC2 instances in the second Region for a DR plan is expensive as you pay for idle compute resources. Manually creating and copying EBS snapshots is less efficient and scalable than AWS Backup, and doesn't cover the entire EC2 instance configuration. Using AWS DataSync to transfer data is designed for large-scale data migration and synchronization, not for cost-effective, ongoing EC2 instance backups, and would require additional EC2 instances to be running in the second Region.