AWS Certified Solutions Architect – Associate (SAA-C03) — Question 574

An ecommerce company uses Amazon Route 53 as its DNS provider. The company hosts its website on premises and in the AWS Cloud. The company's on-premises data center is near the us-west-1 Region. The company uses the eu-central-1 Region to host the website. The company wants to minimize load time for the website as much as possible.

Which solution will meet these requirements?

Answer options

• A. Set up a geolocation routing policy. Send the traffic that is near us-west-1 to the on-premises data center. Send the traffic that is near eu-central-1 to eu-central-1.
• B. Set up a simple routing policy that routes all traffic that is near eu-central-1 to eu-central-1 and routes all traffic that is near the on-premises datacenter to the on-premises data center.
• C. Set up a latency routing policy. Associate the policy with us-west-1.
• D. Set up a weighted routing policy. Split the traffic evenly between eu-central-1 and the on-premises data center.

Correct answer: A

Explanation

A geolocation routing policy allows Amazon Route 53 to serve DNS queries based on the geographic location of the users, which effectively minimizes latency by directing users to the closest deployment. Simple routing cannot route traffic based on the user's location, and weighted routing would distribute traffic evenly regardless of geographic proximity, leading to higher load times. Latency routing is not suitable here because it requires resources inside AWS and cannot be associated directly with us-west-1 to route to an on-premises data center.