SAA-C03 Q527 · DR

Question

A company is building an application composed of multiple microservices that communicate over HTTP. The company must deploy the application across multiple AWS Regions to meet disaster recovery requirements. The application must maintain high availability and automatic fault recovery. Which solution will meet these requirements?

Accepted Answer

The question has three explicit requirements: (1) multiple microservices communicating over HTTP, (2) deployment across **multiple AWS Regions** for disaster recovery, and (3) high availability with automatic fault recovery.

**Option C satisfies all three:**

1. **Multi-Region deployment**: EC2 instances running microservices are deployed in **multiple Regions**, directly fulfilling the DR requirement. If one entire Region goes down, the other Region(s) continue serving traffic.

2. **Amazon Route 53 with latency-based routing**: Route 53 is the only AWS service that can intelligently route traffic across Regions. Latency-based routing sends users to the Region with the lowest latency, and when combined with **health checks**, Route 53 automatically removes unhealthy endpoints and redirec

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