AWS Certified Cloud Practitioner — Question 677

A company wants to use Amazon EC2 instances for a stable production workload that will run for 1 year.

Which instance purchasing option meets these requirements MOST cost-effectively?

Answer options

Correct answer: B

Explanation

Reserved Instances provide a significant discount compared to On-Demand pricing in exchange for a commitment to a consistent level of usage for a 1-year or 3-year term, making them ideal for predictable, steady-state workloads. Spot Instances are not suitable for stable production workloads because they can be interrupted with short notice, while On-Demand Instances are more expensive and Dedicated Hosts are typically used for specific compliance or licensing requirements rather than general cost-efficiency.