Question

A media company hosts a customer-facing web application. Static assets (images, videos, documents) are stored in an Amazon S3 bucket in us-east-1. The business continuity plan requires that if the us-east-1 Region becomes unavailable, the assets must already be present in eu-west-1 so a standby application deployment can serve them with an RPO of minutes and no manual copy steps. Which approach BEST meets these requirements?

Accepted Answer

Enable S3 Cross-Region Replication (CRR) from the us-east-1 bucket to a bucket in eu-west-1, with versioning enabled on both buckets.

Answer

Schedule a nightly AWS DataSync task to copy objects from the us-east-1 bucket to a bucket in eu-west-1.

Answer

Enable S3 Versioning on the us-east-1 bucket and rely on S3's built-in multi-Region durability to serve objects from eu-west-1 during an outage.

Answer

Configure an S3 Lifecycle policy to transition objects to a bucket in eu-west-1 after they are uploaded.