Which solution will meet these requirements?

A company’s application is running on Amazon EC2 instances within an Auto Scaling group behind an Elastic Load Balancer. Based on the application’s history, the company anticipates a spike in traffic during a holiday each year. A solutions architect must design a strategy to ensure that the Auto Scaling group proactively increases capacity to minimize any performance impact on application users.

Which solution will meet these requirements?
A . Create an Amazon CloudWatch alarm to scale up the EC2 instances when CPU utilization exceeds 90%
B . Create a recurring scheduled action to scale up the Auto Scaling group before the expected period of peak demand
C . Increase the minimum and maximum number of EC2 instances in the Auto Scaling group during the peak demand period
D . Configure an Amazon Simple Notification Service (Amazon SNS) notification to send alerts when there are auto scaling EC2_INSTANCE_LAUNCH events

View Answer

Answer: D

Explanation:

https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-dg.pdf