Directing Users to the Best Performing AWS Region

Correct Answer: D.

The AWS Documentation mentions the following.

If your application is hosted in multiple AWS Regions, you can improve your users' performance by serving their requests from the AWS Region that provides the lowest latency.

To use latency-based routing, you create latency records for your resources in multiple AWS Regions.

When Route 53 receives a DNS query for your domain or subdomain (example.com or apex.example.com), it determines which AWS Regions you've created latency records for, determines which region gives the user the lowest latency, and then selects a latency record for that region.

Route 53 responds with the value from the selected record, such as the IP address for a web server.

Because this is mentioned in the documentation, all other options are invalid.

For more information on the routing policies, please visit the below URL-

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html

As the organization has expanded its infrastructure into two regions, it is important to ensure that users are consistently directed to the best performing region. To achieve this, the SysOps Administrator should implement an appropriate solution. Let's examine the options:

A. Configure AWS WAF to redirect users from Asia to the website using a third-party geolocation service. This option involves using AWS WAF to redirect users based on their geographical location. However, it involves using a third-party geolocation service which can be expensive and may not always provide accurate results.

B. Use Amazon Route 53 weighted routing to direct users in Asia to the website. Amazon Route 53 weighted routing is a method of distributing traffic to multiple resources based on different weights. In this case, the SysOps Administrator can configure the weighted routing to direct more traffic to the region with the best performance. This method is cost-effective and reliable, as it is a built-in feature of Route 53.

C. Configure the existing webserver's Application Load Balancer to redirect distant users to the closer website. This option involves configuring the existing Application Load Balancer to redirect users based on their distance from the server. However, this method may not always provide the best performance, as distance is not always a reliable indicator of network latency.

D. Migrate to a Route 53 latency record for the website. A Route 53 latency record is a feature of Route 53 that directs traffic to the region with the lowest network latency. This method ensures that users are consistently directed to the region with the best performance, as network latency is a reliable indicator of performance.

In conclusion, the most appropriate solution for ensuring that users are consistently directed to the best performing region is to use Amazon Route 53 weighted routing or migrate to a Route 53 latency record for the website. These methods are cost-effective, reliable, and built-in features of Route 53.