Which action will maintain uptime for the application MOST cost-effectively?

A company has a stateless application that is hosted on a fleet of 10 Amazon EC2 On-Demand Instances in an Auto Scaling group. A minimum of 6 instances are needed to meet service requirements.

Which action will maintain uptime for the application MOST cost-effectively?
A . Use a Spot Fleet with an On-Demand capacity of 6 instances.
B . Update the Auto Scaling group with a minimum of 6 On-Demand Instances and a maximum of 10 On-Demand Instances.
C . Update the Auto Scaling group with a minimum of 1 On-Demand Instance and a maximum of 6 On-Demand Instances.
D . Use a Spot Fleet with a target capacity of 6 instances.

View Answer

Answer: A