This publication shares the key lessons from a decade of IRRC implementation to improve municipal solid waste management, and explains how the contributions of IRRCs can support the implementation of important global and regional agendas for sustainable development: the 2030 Agenda for Sustainable Development; the New Urban Agenda; the Paris Agreement under the United Nations Framework Convention on Climate Change; the Regional Road Map for the 2030 Agenda in the Asia-Pacific region; and the Ministerial Declaration on Environment and Development in the Asia-Pacific region. The publication also provides policy recommendations for promoting sustainable municipal solid waste management in secondary cities and small towns in the Asia-Pacific region.