AWS SAP-C02 · Question 09 · Domain 1.3: Reliable Architectures
A company is designing a multi-region active-active architecture for a latency-sensitive API. The API is backed by AWS Lambda and Amazon API Gateway. Data is stored in Amazon DynamoDB. Users should be routed to the closest region, but if a region fails, traffic must automatically failover to the healthy region. Which routing solution provides the FASTEST failover and lowest latency?
Answer options:
Use AWS Global Accelerator with custom routing to API Gateway endpoints in both regions.
Use Amazon Route 53 with latency-based routing and Route 53 health checks.
Deploy Amazon CloudFront with an origin group containing the API Gateways from both regions.
Use an Application Load Balancer (ALB) in a central region to route traffic to Lambda functions in multiple regions.
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