An architect is designing a multi-region active-active architecture for a critical API. The API is backed by DynamoDB. Traffic must be routed to the region closest to the user, but if a region fails, traffic must automatically failover to the healthy region. Which THREE configurations are required? (Select THREE)

Answer options:

Configure DynamoDB Global Tables across the required regions.

Use DynamoDB Cross-Region Replication.

Deploy API Gateway and Lambda in multiple regions.

Use AWS Global Accelerator with a single endpoint.

Configure Amazon Route 53 with Latency-based routing and health checks.

Deploy an Application Load Balancer to route traffic between regions.

Use AWS Transit Gateway to sync the DynamoDB tables.

How to approach this question

Identify the database, compute, and routing components for a multi-region architecture.

Full Answer

A, C, E

An active-active multi-region architecture requires data replication (DynamoDB Global Tables), regional compute stacks (API Gateway + Lambda), and a global routing layer that understands network distance and health (Route 53 Latency routing with health checks).

Common mistakes

Trying to use an ALB for cross-region routing.

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