AWS Certified Solutions Architect – Professional — Question 757

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?

Answer options

• A. Configure the application to write each object to both S3 buckets. Set up an Amazon Route 53 public hosted zone with a record set by using a weighted routing policy for each S3 bucket. Configure the application to reference the objects by using the Route 53 DNS name.
• B. Create an AWS Lambda function to copy objects from the S3 bucket in us-east-1 to the S3 bucket in the second Region. Invoke the Lambda function each time an object is written to the S3 bucket in us-east-1. Set up an Amazon CloudFront distribution with an origin group that contains the two S3 buckets as origins.
• C. Configure replication on the S3 bucket in us-east-1 to replicate objects to the S3 bucket in the second Region. Set up an Amazon CloudFront distribution with an origin group that contains the two S3 buckets as origins.
• D. Configure replication on the S3 bucket in us-east-1 to replicate objects to the S3 bucket in the second Region. If Lawyer is required, update the application code to load S3 objects from the S3 bucket in the second Region.

Correct answer: C

Explanation

Configuring Amazon S3 replication natively handles data synchronization between Regions without custom code, and using an Amazon CloudFront origin group provides automated failover for static assets with minimal operational overhead. Options A and D are incorrect because they require application code modifications, which increases management complexity. Option B is incorrect because it introduces unnecessary operational overhead by using custom AWS Lambda functions instead of native S3 replication features.