A company is finalizing the architecture for its backup solution for applications running on AWS. All of the applications run on AWS and use at least two Availa...

A company is finalizing the architecture for its backup solution for applications running on AWS. All of the applications run on AWS and use at least two AvailabilityZones in each tier.
Company policy requires IT to durably store nightly backups for all its data in at least two __cpLocations: production and disaster recovery. The __cpLocations must be in different geographic regions. The company also needs the backup to be available to restore immediately at the production data center, and within 24 hours at the disaster recovery __cpLocation. All backup processes must be fully automated.
What is the MOST cost-effective backup solution that will meet all requirements?