Answer: Reliability

## Explanation This architecture represents the **Reliability** pillar of the AWS Well-Architected Framework because: - **Automatic scaling of compute resources** ensures the system can handle increased demand and maintain availability - **Disaster recovery plan with automatic failover** provides business continuity and system resilience - **Reliability pillar** focuses on: - Recovering from infrastructure or service disruptions - Dynamically acquiring computing resources to meet demand - Mitigating disruptions such as misconfigurations or transient network issues While other pillars are important: - **Operational excellence** focuses on running and monitoring systems - **Security** focuses on protecting information and systems - **Performance efficiency** focuses on using computing resources efficiently The combination of auto-scaling and disaster recovery directly addresses the core principles of the Reliability pillar.

Author: Ritesh Yadav