targetCapacity

The target capacity utilization as a percentage for the capacity provider. The specified value must be greater than 0 and less than or equal to 100 . For example, if you want the capacity provider to maintain 10% spare capacity, then that means the utilization is 90%, so use a targetCapacity of 90 . The default value of 100 percent results in the Amazon EC2 instances in your Auto Scaling group being completely used.