An EC2 Auto Scaling group for a utility customer portal must remain available if one Availability Zone fails. What capacity placement practice should architects apply?
Select an answer to reveal the explanation.
Short Explanation
Don’t park the whole portal fleet in one AZ driveway. Spread Auto Scaling capacity across AZs so one dark zone doesn’t take every instance with it.
Full Explanation
AZ-balanced Auto Scaling capacity keeps remaining instances available when one AZ fails. Concentrating capacity in one AZ, host-pinning that collapses with the AZ, or single-AZ target registration creates a zone-level SPOF. Multi-AZ distribution is a core reliability design for civic portals.