Outsourcing is an ongoing trend and changed how companies organize their processes and business activities. Various approaches (Resource Sharing, Plural Sourcing, Quasi-Outsourcing) exist in the tension between internalization and externalization. But how to deal with situations where outsourcing would generate benefits but the control over the business activity as well as the know-how included should be retained in the Organization? Is it possible to realize the advantages and benefits of Outsourcing while minimizing the risk of losing critical knowledge and control over a certain business activity? This Master Thesis introduces, in this special field of research, a new concept which tries to combine the benefits of outsourcing and insourcing while reducing the most vital shortcomings of a full-scale outsourcing activity. In order to achieve this goal this Master Thesis relies on semi-structed expert interviews and a comprehensive literate review. With the help of the information gathered the Hybrid Outsourcing Models I and II were created and introduced. The two models differ in the extend on how much know how and control should be retained in-house. The approaches are then discussed theoretically and in context with the interviews carried out. Afterwards practical implications have been derived and discussed. All in all, the Hybrid Outsourcing Models show that a practical application is possible and that the promised advantages can be realized when the Hybrid Outsourcing Models are used in the right situations.