AWS Certified Cloud Practitioner — Question 459

A company plans to migrate its application to AWS and run the application on Amazon EC2 instances. The application will have continuous usage for 1 year.

Which EC2 instance purchasing option will meet these requirements MOST cost effectively?

Answer options

Correct answer: A

Explanation

Reserved Instances provide a significant discount compared to On-Demand pricing in exchange for a committed 1-year or 3-year term of continuous usage, making them ideal for this scenario. On-Demand Instances are more expensive for steady-state workloads, while Spot Instances can be terminated by AWS and are unsuitable for continuous, uninterrupted application requirements. Dedicated Hosts are physical servers dedicated to a single customer, which is a much costlier option and unnecessary unless specific licensing or compliance needs exist.