The Post Disaster Needs Assessment, PDNA, is a joint product of the European Union, the World Bank and the United Nations Development Group, drawn up as an effort to harmonize post crises assessments, including those associated to disasters triggered by natural hazards. At the end of this module, you will be able to understand the fundamentals of the PDNA methodology. This is a self-paced animated module, including examples and activities. If, after completing this overview module, you want to take the additional 4 modules, you can enrol in the Introduction to Post Disaster Needs Assessment (PDNA)" course."