UNDP’s support to countries in achieving sustainable, inclusive and resilient urbanization is a key part of the Paris Agreement on Climate Change. UNDP works with countries to achieve transformational development progress by scaling up action on climate change. Specifically, countries will use their Nationally Determined Contributions (NDCs) as a tool for transitioning to a climate-resilient, zero-carbon pathway, which will help them lock in adequate sustainable infrastructures to meet the complex economic, societal and planetary needs of the 21st century.