This Sustainable Urbanization Strategy outlines how UNDP is responding to rapid urbanization in developing countries and its consequences for sustainable development. It outlines how UNDP will support countries and cities, building upon its past and current work on urbanization. The strategy presents the complex and evolving urban challenges and the interrelated development choices which cities face as they strive to achieve the SDGs and implement the New Urban Agenda. It also sets out UNDP’s comparative advantage and experience in core thematic areas which are relevant to achieving the SDGs in cities and urban areas.