AWS Certified Solutions Architect - Associate SAA-C03 — Topic 1 Question 879

Question

A company runs an ecommerce application on AWS. Amazon EC2 instances process purchases and store the purchase details in an Amazon Aurora PostgreSQL DB cluster. Customers are experiencing application timeouts during times of peak usage. A solutions architect needs to rearchitect the application so that the application can scale to meet peak usage demands. Which combination of actions will meet these requirements MOST cost-effectively? (Choose two.)

Accepted Answer

Correct answer: A, C. The correct answer is A, C. Option A: Configure an Auto Scaling group of new EC2 instances to retry the purchases until the processing is complete. Update the applications to connect to the DB cluster by using Amazon RDS Proxy. Option C: Update the application to send the purchase requests to an Amazon Simple Queue Service (Amazon SQS) queue. Configure an Auto Scaling group of new EC2 instances that read from the SQS queue. Auto Scaling adjusts capacity automatically to match demand, improving availability and cost efficiency. Amazon EC2 provides resizable virtual servers when you need full control of the operating system. Amazon RDS Proxy pools and shares database connections to improve scalability and resilience. This option delivers the requirement at the lowest cost.

AWS Certified Solutions Architect - Associate SAA-C03 — Question 879