The document summarizes the history, activities, goals, and lessons learned of the Balkan Civil Society Development Network (BCSDN), a regional network of civil society organizations in the Balkan region. It was established in 2001 with the vision of sustainable peace and prosperity in the Balkans. Its strategic goals are to increase the role of civil society in policymaking and promote civil dialogue. Over the past decade it has organized numerous trainings, conferences, and advocacy activities. External evaluations found it has made significant contributions to cross-border cooperation and democratic stabilization in the region. Key lessons highlighted include ensuring legitimacy, clearly defined goals and interests, and long-term sustainability.