This Toolkit has been developed by IOM in collaboration with UN-Habitat with the support of the European Union under the Mainstreaming Migration into International Cooperation and Development (MMICD) project. In the Toolkit, we explore how migration relates to the following sub-sectors: (i) urban legislation and governance, (ii)urban planning, housing, and basic services, (iii) urban economy and finance, (iv) urban resilience. It provides practical information and tools to help development practitioners integrate migration into urban development interventions.