AWS Certified Cloud Practitioner CLF-C01 – Question212

An ecommerce company wants to use Amazon EC2 Auto Scaling to add and remove EC2 instances based on CPU utilization.
Which AWS service or feature can initiate an Amazon EC2 Auto Scaling action to achieve this goal?

A.
Amazon Simple Queue Service (Amazon SQS)
B. Amazon Simple Notification Service (Amazon SNS)
C. AWS Systems Manager
D. Amazon CloudWatch alarm

Correct Answer: B