AWS Certified Solutions Architect - Associate SAA-C03 — Topic 1 Question 167

Question

A company runs a production application on a fleet of Amazon EC2 instances. The application reads the data from an Amazon SQS queue and processes the messages in parallel. The message volume is unpredictable and often has intermittent traffic. This application should continually process messages without any downtime. Which solution meets these requirements MOST cost-effectively?

Accepted Answer

Correct answer: D. The correct answer is D. Option D: Use Reserved Instances for the baseline capacity and use On-Demand Instances to handle additional capacity. Reserved Instances lower cost for steady-state, predictable long-running workloads. This option delivers the requirement at the lowest cost.

AWS Certified Solutions Architect - Associate SAA-C03 — Question 167