The constantly rising fraction of industrial services reveals the structural economic change that is changing the manufacturing industry landscape. Manufacturing firms have more and more problems to find the appropriate information technology (IT) solution for planning and execution as they are confronted with the strategic challenge of reducing operating costs while at the same time meeting ever-increasing industrial service demands. Despite the existence of some standardization efforts dealing with product-related services, there is no common understanding of product-service systems and the corresponding processes and IT systems among manufacturing companies. This paper addresses this need by developing a maturity model capturing the key requirements for the information systems (IS) support of product-service systems based on a multiple case study. Further, we confronted these requirements with scientifically recognized maturity models and standard specifications developed by the German Standards Institute. The development of the maturity model is grounded in the design science research approach and is evaluated by managerial experts.