Which AWS service pattern is designed to enable cross-region replication and low-latency reads for multi-region applications involving non-relational data?

• A. DynamoDB Global Tables.
• B. S3 Cross-Region Replication.
• C. RDS Read Replicas.
• D. Aurora Global Database.

Answer: (A)

Cross-region replication for a non-relational data store is achieved with DynamoDB Global Tables. This pattern makes a DynamoDB table available in multiple AWS regions and keeps the data replicated across them, enabling reads from the region closest to users to be low latency while still allowing writes in any region. It delivers a globally distributed, multi-region, active-active NoSQL database experience, with automatic replication to other regions and resilience against regional failures. Other options focus on different data types or services—S3 object replication, relational databases like RDS or Aurora—so they don’t provide the native cross-region, low-latency, multi-region replication pattern needed for non-relational data.