Manufacturing companies, such as plant manufacturers and factory equipment suppliers, have been able toexpand their traditional business model with services in recent decades, particularly around their coreproduct. Thus, the transactional business model evolved into today's project business, where for exampleengineering services and after-sales services were additionally provided. Through the advancing integrationof producers, customers and machines into cyber-physical systems, known as Industrie 4.0, it is now alsopossible to offer the core product as a service. This development is described with the help of variousconcepts such as service transformation, product-service system and servitization. Many of these conceptsare interdependent and ambiguous. A clear scientific treatment of the concepts and especially a comparisonof the concepts is therefore currently not possible.Therefore, the purpose of this paper is to develop a systematization in the form of a morphology thatdescribes the various concepts that constitute servitization of the core service product in the engineeringindustry. In doing so, the systematization is based on the four dimensions: customer, value proposition,revenue mechanics and value chain.