The enterprise organization must fulfil its strategy. Processes describing enterprise business core and enterprise organizational structure enable enterprise to meet this objective. This paper concerns business process driven design of customer oriented services. The description of business processes from customer instead of the production department allows indeed service set providing to the customer by the enterprise. In order to satisfy enterprise objectives, the service design procedure is so based on the Enterprise Architecture (EA) system point of view, whether services are computerized or not. Our service design procedure benefits from EA according to the enterprise strategy realization gap between the target Information System and the business core. This service design procedure adds an enterprise service automated design thanks to model driven engineering to the alignment so defined.