Question

A media company serves user-uploaded images from an S3 bucket in us-east-1 to a global audience. During a recent regional impairment, uploads and reads in us-east-1 failed for two hours, breaching the company's RTO objective of under 5 minutes. The team wants applications to automatically route both reads and writes to a healthy Region without changing application endpoints, and they already replicate data bidirectionally between us-east-1 and eu-west-1. Which approach best meets the RTO goal with minimal application changes?

Accepted Answer

Create an S3 Multi-Region Access Point with both buckets, enable its failover controls to make eu-west-1 passive, and have applications use the Multi-Region Access Point ARN as the endpoint.

Answer

Configure a Route 53 failover record with health checks pointing to the two S3 static website endpoints and update DNS to route to eu-west-1 on failure.

Answer

Enable S3 Cross-Region Replication with Replication Time Control and have the application catch errors, then retry against the eu-west-1 bucket endpoint directly.

Answer

Deploy CloudFront with two S3 origins in an origin group so CloudFront fails over reads to eu-west-1 automatically.