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An EC2 fleet behind an ALB needs to scale out when average CPU goes above 70% for 5 minutes. Which AWS service implements this rule?
AAWS Glue ETL jobs
BAWS Trusted Advisor recommendations
CAWS Lambda timers
DAmazon EC2 Auto Scaling with a CloudWatch alarm as the scaling policy trigger
Answer & Solution
Correct answer: D. Amazon EC2 Auto Scaling with a CloudWatch alarm as the scaling policy trigger
EC2 Auto Scaling groups are driven by CloudWatch alarm-based scaling policies. Lambda timers, Trusted Advisor, or Glue don't manage EC2 capacity.
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