Question

A financial services company stores critical transaction documents in an S3 bucket in us-east-1. Compliance requires a disaster recovery capability with an RPO of 15 minutes and the ability to serve objects from us-west-2 if the primary region becomes unavailable. The DevOps team must automate the failover with minimal application changes and ensure the DR copy is immediately readable. Which approach best meets these requirements?

Accepted Answer

Enable S3 Cross-Region Replication (CRR) with Replication Time Control (RTC) to us-west-2, and use a Route 53 or client-side failover to redirect reads to the destination bucket during an outage.

Answer

Schedule an hourly AWS Backup plan that copies the bucket contents to a backup vault in us-west-2 and restores on demand during a disaster.

Answer

Enable S3 Versioning and rely on S3 automatic multi-region durability, restoring objects from a previous version if us-east-1 fails.

Answer

Use an hourly AWS DataSync task to copy objects to a us-west-2 bucket and manually promote it during a disaster.