AWS Certified Cloud Practitioner — Question 575

A company is designing AWS architecture that will add compute resources when the company needs them. The architecture also includes a disaster recovery plan with automatic failover.

Which pillar of the AWS Well-Architected Framework does this architecture represent?

Answer options

• A. Reliability
• B. Operational excellence
• C. Security
• D. Performance efficiency

Correct answer: A

Explanation

The Reliability pillar of the AWS Well-Architected Framework focuses on a system's ability to recover from infrastructure or service disruptions, dynamically acquire computing resources to meet demand, and mitigate disruptions such as transient network issues. Automatic failover and on-demand resource scaling directly support these reliability objectives, whereas the other pillars focus on cost, security, performance, or operational procedures.