Aligning business with IT requires understanding goals, strategies and needs. To be able to express them, an enterprise model can be developed. We present some of the traditional techniques used for the development of an enterprise model (value system, BPMN, UML) and compare them with a systemic method (SEAM). This comparison is done by presenting a real project done at the Swiss Federal Statistical Office. We also show that the concepts of goals, strategies and needs correspond to interpretations of the stakeholders of the enterprise model.