1. A method comprising: collecting data for a plurality of metrics, each metric relating to utilization of a computing resource allocated to a virtual machine; comparing the data to decision criteria; determining a confidence level that the virtual machine is not utilized based, at least in part, on the comparing; retrieving a policy that defines an action to be taken for the confidence level, wherein the action is derived from a previous action; and initiating the action in accordance with the policy and confidence level.