AWS Certified Cloud Practitioner — Question 694

A company’s application is running on Amazon EC2 instances. The company is planning a partial migration to a serverless architecture in the next year and wants to pay for resources up front.

Which AWS purchasing option will optimize the company's costs?

Answer options

• A. Convertible Reserved Instances
• B. Spot Instances
• C. EC2 Instance Savings Plans
• D. Compute Savings Plan

Correct answer: D

Explanation

Compute Savings Plans offer the greatest flexibility because they automatically apply to compute usage across Amazon EC2, AWS Fargate, and AWS Lambda, which perfectly accommodates a partial migration to serverless. In contrast, EC2 Instance Savings Plans and Convertible Reserved Instances are restricted to EC2 and do not cover serverless compute options like Fargate or Lambda. Spot Instances are designed for fault-tolerant workloads and do not allow for upfront commitment discounts.