Question

A company runs a production web application behind an Application Load Balancer in one AWS Region. The development team wants to release a new version of the application to a small percentage of real user traffic (approximately 10%) to validate stability before rolling it out to everyone. They have deployed the new version behind a second, identical Application Load Balancer. Which Amazon Route 53 configuration best supports this gradual, controlled traffic shift?

Accepted Answer

Create two weighted records for the same domain name, assigning a weight of 90 to the existing ALB and a weight of 10 to the new ALB.

Answer

Create a failover routing policy with the existing ALB as primary and the new ALB as secondary, relying on health checks to shift traffic.

Answer

Create a latency-based routing policy pointing to both ALBs so Route 53 sends 10% of users to the closer endpoint.

Answer

Create a multivalue answer routing policy returning both ALB records so clients randomly pick the new version 10% of the time.