The author develops an integrative approach to the development and internationalization of business models in multinational companies in this work. Furthermore, he conceptualizes the core of the business model as a central tool for the international scaling of business models. The conceptual development of the integrative approach and the core business model is based on an in-depth case study in the context of electromobility. The case study illustrates how the characteristic tension between local adaptation and global integration for multinational companies affects the development of new business models.