2. Sensing (Monitoring) the Service State : 2.1 Monitoring Approaches : 2.1.3 Derived Metrics : 2.1.3.1. Composite Metrics
   
2.1.3.1. Composite Metrics
Whether using polled, stream, or a combination of both monitoring techniques to observe the system, more fidelity can be provided to the results by creating macro metrics that are a function of a number of metrics to derive a composite metric that describes the system state.