AWS Certified Solutions Architect – Associate (SAA-C02) — Question 285

A company has a popular gaming platform running on AWS. The application is sensitive to latency because latency can impact the user experience and introduce unfair advantages to some players. The application is deployed in every AWS Region. It runs on Amazon EC2 instances that are part of Auto Scaling groups configured behind Application Load Balancers (ALBs). A solutions architect needs to implement a mechanism to monitor the health of the application and redirect traffic to healthy endpoints.
Which solution meets these requirements?

Answer options

• A. Configure an accelerator in AWS Global Accelerator. Add a listener for the port that the application listens on and attach it to a Regional endpoint in each Region. Add the ALB as the endpoint.
• B. Create an Amazon CloudFront distribution and specify the ALB as the origin server. Configure the cache behavior to use origin cache headers. Use AWS Lambda functions to optimize the traffic.
• C. Create an Amazon CloudFront distribution and specify Amazon S3 as the origin server. Configure the cache behavior to use origin cache headers. Use AWS Lambda functions to optimize the traffic.
• D. Configure an Amazon DynamoDB database to serve as the data store for the application. Create a DynamoDB Accelerator (DAX) cluster to act as the in- memory cache for DynamoDB hosting the application data.

Correct answer: A

Explanation

AWS Global Accelerator is the ideal service for routing global, latency-sensitive traffic over the AWS global network to regional endpoints like ALBs while continuously monitoring their health. If a regional endpoint becomes unhealthy, AWS Global Accelerator instantly redirects traffic to the next closest healthy endpoint. Amazon CloudFront and DynamoDB with DAX do not provide this regional health-based routing and failover capability for dynamic TCP/UDP gaming traffic.