What is a key disadvantage of using single-region data replication for a global application in ECS?

Question

Options

• AIncreased complexity in managing data access permissions
• BHigher costs due to multi-region deployment
• CPotential for data loss in the event of a regional outage
• DDifficulty in integrating with local networks

• A
  12% (4)
• B
  6% (2)
• C
  76% (25)
• D
  6% (2)

Explanation

Single-region replication stores all data copies within one geographic location, meaning a regional outage - caused by a natural disaster, power failure, or datacenter incident - can render all replicas simultaneously unavailable or permanently lost, with no geographically separate copy to fail over to. Option A is wrong because data access permissions are managed at the IAM/policy level and are not directly affected by replication topology. Option B is wrong because it's actually backwards: single-region is cheaper than multi-region; higher costs are a disadvantage of expanding to multiple regions, not staying in one. Option D is wrong because local network integration challenges exist independently of replication strategy and aren't specific to single-region setups.

Memory tip: Think "single region = single point of failure." If your only copies of data all live in us-east-1 and us-east-1 goes down, you have nothing - global users lose access and recovery may be impossible.

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