Policy Engine

A message or event is received and based on that event and the state of data held by the policy manage, certain action is taken. It is possible to update the policy as well as the data on which a decision is made. The engine is loaded with policies and data which determine what action to take when an event is received. Action consumers subscribe to the service in order to be informed when certain actions occur. It could be that (but not essential) that the same action consumers are the ones providing data and policies. In this way they can use a policy engine to filter out events depending on the policies and data.