Customer delight as a unique selling proposition is an abrupt goal of sustainably built companies. In daily business, the basis for customer enthusiasm, a professional, transparent and seamless business process, is unfortunately often lost. In times of globalization, a professional approach to customers across the entire service delivery process is becoming increasingly important, as this can represent the decisive competitive advantage over market competitors. In order to be able to offer companies proof of their professional working methods, this work is intended to provide the key points that offer proof of the corresponding framework conditions that enable this professional approach to customers.