94% of the errors that are discovered on new products are implemented already under the development face (Edvardsson, 2000). One reason to this is that the supplier in its interaction with the customer, who ordered the product, fail to communicate on the same level as the customer. This essay is about how the supplier can succeed to apply quality according to the customer in system development, in other words how the supplier can get the customer to feel that the total experience of the information system is positive, further get the customer to feel that the system development is done in a qualitative good manner and also that the delivered system meet the customers expressed and unexpressed demands, needs and expectations. Our investigation shows that total experienced quality is a function of expected and experienced service/product and also the profile/image that the supplier deliver the customer. For the system that will be developed shall be seen as a good system by the customer and the whole process when the system is being developed shall be experienced as good quality, is it important to put a lot of effort in to the demand specification. This due to that this face is deciding for the next coming faces in the system development. To succeed with this the supplier must create an atmosphere that contributes to an open and honest dialog between the two parties, which can be reached by implying functional quality into the system development.