AWS Certified Cloud Practitioner — Question 278

Which of the following is an architectural design principle of the AWS Well-Architected Framework?

Answer options

• A. Loosely couple components
• B. Build monolithic systems
• C. Scale vertically, not horizontally
• D. Use third-party software

Correct answer: A

Explanation

Loose coupling of components is a fundamental AWS Well-Architected Framework design principle because it reduces interdependencies, ensuring that a failure in one component does not cascade to others. Conversely, the framework discourages monolithic designs and advocates for horizontal scaling rather than solely vertical scaling. Utilizing third-party software is an implementation choice but is not a core architectural design principle.