A web application runs across several Amazon EC2 instances in an Auto Scaling group. The company wants the group to add instances whenever the instances' CPU utilization goes above 50%. Which Auto Scaling configuration should the SysOps administrator choose to satisfy this requirement?

Dynamic scaling, specifically using a target tracking scaling policy, is the correct choice because it allows the Auto Scaling group to adjust capacity in response to real-time metrics like CPU utilization. By setting a target of 50% CPU utilization, the Auto Scaling group automatically adds or removes instances to maintain that average. Event-based triggers are for specific, non-metric events. Scaling on a fixed schedule is for predictable load patterns, not fluctuating CPU usage. Predictive scaling uses machine learning to forecast future load, which is more advanced than simply reacting to current CPU utilization and not necessary for this specific requirement.