Impact Mapping Domain

The basic structure of Impact Mapping

Impact Mapping is described here. And there is a book about it. 

The very short version is that you alone or in a team look for the most effective way to achieve your goal. The approach is that you first brainstorm potential actors (who), analyse how they can impact your goal and then think about what you can do in order to help the actors with your goal.

A quick overview can be found here: