AWS Certified Cloud Practitioner — Question 749

A company migrated its core application onto multiple workloads in the AWS Cloud. The company wants to improve the application’s reliability.

Which cloud design principle should the company implement to achieve this goal?

Answer options

• A. Maximize utilization.
• B. Decouple the components.
• C. Rightsize the resources.
• D. Adopt a consumption model.

Correct answer: B

Explanation

Decoupling application components ensures that a failure in one part of the system does not cause a cascading failure across the entire application, thereby significantly improving reliability. In contrast, maximizing utilization, rightsizing, and adopting a consumption model are focused on cost optimization and efficiency rather than system reliability.