This joint publication “Unpacking Metropolitan Governance for Sustainable Development” is the product of a close cooperation between GIZ and UN-Habitat. Against the background of rapid urbanization, new forms of power relations between the different levels of government emerge and stronger coordination and cooperation is required. GIZ and UN-Habitat are both convinced that effective metropolitan governance is crucial for transformative development, considering social, political, economic and environmental impacts. While the subsidiarity principle is still valid and valuable, some decisions are most effectively implemented at a metropolitan level that follows the functional area. Climate change, natural disasters or economic development do not stop at administrative boundaries, hence joint action needs to be taken. Infrastructure needs can be better solved through joint forces and coordination between administrations and different stakeholders. This study shall give insights into ways metropolitan regions are governed and how it relates with the good urban governance principles.