The increased complexity and variety of information systems outsourcing poses challenges for the successful management of sourcing projects. Stefanie Leimeister examines different types of IT outsourcing relationships and their governance structures depending on the outsourcing clients' underlying expectations. Based on a variety of current theories from the fields of information systems, business administration, and social science, she develops a governance model for the successful management of IT outsourcing projects. Following a multi-method approach and also based on a quantitative empirical investigation of German IT leaders and CIOs, she proposes appropriate governance mechanisms for the specific management of each outsourcing client type. The author derives actionable advice for applicable strategies and an effective allocation of resources for an outsourcing venture.