In this enterprise, AR is the account manager, SR is the solution manager, and FR is the delivery manager.

Huawei Iron Triangle AR, SR and FR are the three core roles responsible for customer relationship, solution and delivery. AR is responsible for communicating with customers, understanding customer needs and maintaining customer relations; SR is responsible for formulating solutions according to customer needs to ensure that the solutions can meet customer needs; FR is responsible for ensuring that the project is completed on time and with good quality, and conducting delivery acceptance with customers.

These three roles together ensure the smooth progress of the project. This model is called the "iron triangle" because it emphasizes the close cooperation and interdependence among the three roles.