Enterprise resource planning (ERP) systems introduce changes on a larger scale than most other systems. They link various components of the organization and modify its structure by deploying standardized processes and data models, which can lead to higher efficiency and significant cost savings. This case shows the adjustment dynamic between an ERP system and the other components of the organization. The project is a very large one, involving an investment of several hundred million dollars. The results are impressive. Bombardier implemented new processes through the use of the system, changed the roles of its employees, created a different way of looking at the organization and its activities and established new value indicators that helped crystallize the new behaviours.