This Recommendation describes business roles@ business role-based models and best practice use cases of IMT-2020 from different relevant perspectives. It can be used as a guideline for further IMT-2020 studies from business point of view as well as for deployment and operation of IMT-2020 networks. NOTE - This Recommendation obviously does not identify@ in an exhaustive manner@ all business roles@ business role-based models and best practice use cases of IMT-2020