1. The rise of multi-actor networks -- 2. Networks and decision-making processes -- 3. Strategies in networks: the essence -- 4. Strategies: a comparison between project-based and process-based change -- 5. Trust and rules of the game in networks -- 6. Hybrid strategies : the role of command and control in networks -- 7. The hybrid organization: hierarchy, networks and accountability -- 8. Finally, two objections to the network approach.