SOA-C02 Question 93
Single answerYour company hosts an e-commerce website with users across the globe. The website is deployed in three AWS Regions: US-East-1, EU-West-1, and AP-Southeast-1. You need to configure DNS routing such that users are directed to the region with the lowest latency to ensure optimal performance. Which Route 53 routing policy should you use?
- A
Weighted routing policy
- B
Failover routing policy
- C
Geolocation routing policy
- D
Latency-based routing policy
Show answer and explanation
Correct answer: D
Explanation
Latency-based routing in Route 53 is designed to route traffic to the AWS region that provides the lowest latency to the end user. This makes it the ideal choice for ensuring optimal performance for a globally distributed user base. Other routing policies like weighted, failover, and geolocation do not prioritize or measure latency, making them unsuitable for this scenario.
- A. Incorrect.
Weighted routing policy allows you to distribute traffic across multiple resources based on assigned weights but does not consider latency. This is not suitable for ensuring users are directed to the region with the lowest latency.
- B. Incorrect.
Failover routing policy is used to route traffic to a standby resource if the primary resource is unhealthy. It does not take latency into account and is not suitable for this use case.
- C. Incorrect.
Geolocation routing policy directs traffic based on the geographic location of the user. While this can help in directing traffic to specific regions, it does not consider latency and therefore cannot ensure the lowest latency routing.
- D. Correct.
Latency-based routing policy routes traffic to the region that provides the lowest network latency for the user. This is the correct choice for ensuring optimal performance for users across the globe.