Architects drew a multi-AZ design with Route 53 health checks and Auto Scaling for a voter-results API, but the design has never been failed over in production-like conditions. What validates that recovery actually works?
Select an answer to reveal the explanation.
Short Explanation
Diagrams do not vote—game days do. Pull the AZ or flip the health check and watch Route 53 plus Auto Scaling actually recover the results API. Untested HA is hope with pretty boxes.
Full Explanation
High-availability designs must be validated with failover testing or game days. Exercising Route 53 health-check failover and Auto Scaling replacement confirms that recovery paths meet expectations under failure. Architecture diagrams alone do not prove RTO. Disabling health checks or never simulating AZ loss leaves latent defects undiscovered until a real outage.