AWS Certified Solutions Architect - Associate SAA-C03 — Topic 1 Question 195

Question

A company’s order system sends requests from clients to Amazon EC2 instances. The EC2 instances process the orders and then store the orders in a database on Amazon RDS. Users report that they must reprocess orders when the system fails. The company wants a resilient solution that can process orders automatically if a system outage occurs. What should a solutions architect do to meet these requirements?

Accepted Answer

Correct answer: C. The correct answer is C. Option C: Move the EC2 instances into an Auto Scaling group. Configure the order system to send messages to an Amazon Simple Queue Service (Amazon SQS) queue. Configure the EC2 instances to consume messages from the 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 SQS is a fully managed message queue that decouples components and absorbs traffic spikes. By spanning multiple Availability Zones / adding redundancy, this option provides the high availability and resilience required.

AWS Certified Solutions Architect - Associate SAA-C03 — Question 195