A company runs a stateless application that is hosted on an Amazon EC2 instance. Users are reporting performance issues. A SysOps administrator reviews the Amazon CloudWatch metrics for the application and notices that the instance’s CPU utilization frequently reaches 90% during business hours.
What is the MOST operationally efficient solution that will improve the application’s responsiveness?
A . Configure CloudWatch logging on the EC2 instance. Configure a CloudWatch alarm for CPU utilization to alert the SysOps administrator when CPU utilization goes above 90%.
B . Configure an AWS Client VPN connection to allow the application users to connect directly to the EC2 instance private IP address to reduce latency.
C . Create an Auto Scaling group, and assign it to an Application Load Balancer. Configure a target tracking scaling policy that is based on the average CPU utilization of the Auto Scaling group.
D . Create a CloudWatch alarm that activates when the EC2 instance’s CPU utilization goes above 80%. Configure the alarm to invoke an AWS Lambda function that vertically scales the instance.
Answer: C
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