This metric is integrated with Auto Scaling through a new type of scaling policy called target tracking scaling policies where you select this metric as a load metric for your application, set the target value, and Auto Scaling adjusts the number of EC2 instances in your Auto Scaling group as needed to maintain that target value. For example, you can configure target tracking scaling policy for your Auto Scaling Group to keep RequestCountPerTarget at 1000 for your webserver fleet. From there, Auto Scaling launches or terminates EC2 instances as required to keep RequestCountPerTarget at 1000.