SAP-C02 Q568 · DR

Question

A company hosts an e-commerce site using EC2, ALB, and DynamoDB in one AWS Region. The site uses a custom domain in Route 53. The company wants to replicate the stack to a second Region for disaster recovery and faster access for global customers. What should the architect do?

Accepted Answer

Option A satisfies every requirement stated in the question:

**Requirement 1: Replicate the stack to a second Region**
→ **CloudFormation** is the Infrastructure-as-Code (IaC) service that lets you define your entire stack (EC2, ALB, DynamoDB, security groups, etc.) as a template. You can deploy the same template to any Region with region-specific parameter overrides. This is repeatable, auditable, and consistent — the gold standard for multi-Region deployments.

**Requirement 2: Disaster Recovery**
→ **DynamoDB Global Tables** provide active-active, multi-Region replication with sub-second latency. Data written in Region A is automatically replicated to Region B. If Region A fails, Region B already has up-to-date data and can serve traffic immediately, achieving a very low RPO and RTO.

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