AWS Certified Cloud Practitioner — Question 984

A company does not want to rely on elaborate forecasting to determine its usage of compute resources. Instead, the company wants to pay only for the resources that it uses. The company also needs the ability to increase or decrease its resource usage to meet business requirements.
Which pillar of the AWS Well-Architected Framework aligns with these requirements?

Answer options

• A. Operational excellence
• B. Security
• C. Reliability
• D. Cost optimization

Correct answer: D

Explanation

The Cost Optimization pillar focuses on avoiding unnecessary costs, which includes matching supply with demand to pay only for what is used and avoiding over-provisioning through scaling. Operational Excellence, Security, and Reliability focus on running systems effectively, protecting information, and recovering from disruptions, respectively, rather than financial efficiency.