SAP-C02 Q36 · DR

Question

A company’s solutions architect is reviewing a web application that runs on AWS. The application references static assets in an Amazon S3 bucket in the us-east-1 Region. The company needs resiliency across multiple AWS Regions. The company already has created an S3 bucket in a second Region. Which solution will meet these requirements with the LEAST operational overhead?

Accepted Answer

Option C meets all requirements with least operational overhead through two key AWS-native features:

1. **S3 Cross-Region Replication (CRR)**: This is AWS's built-in, fully managed mechanism for replicating objects between S3 buckets in different Regions. Once configured, it automatically and asynchronously copies new objects to the destination bucket — no custom code, no Lambda functions, no application changes needed.

2. **CloudFront Origin Group with Origin Failover**: A CloudFront origin group allows you to define a **primary origin** (us-east-1 S3 bucket) and a **secondary origin** (second Region S3 bucket). CloudFront automatically fails over to the secondary origin when the primary returns specific HTTP error status codes (e.g., 500, 502, 503, 504, 404, 403). This provides **autom

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