A municipal web tier must survive loss of an Availability Zone without manual redeploy. Which HA design should the architect use?
Select an answer to reveal the explanation.
Short Explanation
Spread the front door and the workers across AZs—ALB plus multi-AZ Auto Scaling keeps the website up when one AZ naps.
Full Explanation
An ALB distributed across multiple AZs combined with a multi-AZ Auto Scaling group replaces unhealthy instances and continues serving if one AZ fails. Single-instance, single-AZ ALB with max=1, and unmonitored public IPs leave AZ SPOFs in place.