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Difficulty: MediumAWS Global Infrastructure

A financial institution is designing a disaster recovery strategy for its core banking application on AWS. The application currently runs in a single AWS Region. The institution's compliance policy requires that backup copies of the data be stored in a geographically isolated location that is at least 250 miles away from the primary operating environment to protect against a regional natural disaster. Which AWS Global Infrastructure component should the institution use to store these backups?

  1. A
    A different Availability Zone within the same AWS Region
  2. A different AWS RegionAnswer
  3. C
    An AWS Edge Location
  4. D
    An AWS Local Zone

Answer

A different AWS Region
Storing backups in a different AWS Region satisfies the compliance requirement because AWS Regions are geographically isolated from one another by hundreds of miles. This distance ensures that a regional disaster affecting the primary region will not impact the backup data stored in the secondary region.

Step-by-Step Solution

1
Identify the primary constraint in the scenario.
The backups must be stored in a geographically isolated location at least 250 miles away from the primary operating environment.
This requirement rules out any infrastructure components that reside within the same metropolitan area or parent Region.
2
Evaluate the geographic scale and boundaries of the AWS Global Infrastructure components.
Availability Zones and Local Zones are situated within or close to the parent Region's metropolitan area, whereas different AWS Regions are separated by hundreds of miles across distinct geographic areas.
This comparison identifies which component provides the physical distance needed to satisfy the 250-mile policy.
3
Verify the capabilities of the remaining components to support backup storage.
An AWS Region supports full storage services (like Amazon S3 and Amazon EBS) for durable backups, while Edge Locations are only designed for content caching and low-latency delivery.
This confirms that deploying backups to a different AWS Region is both physically sufficient and technologically correct.

Key Concept

AWS Regions vs Availability Zones for Disaster Recovery
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Topics

AWS Global Infrastructure

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