This lecture discusses urban improvement programs in Senegal, focusing on the case of Pikine Irrégulier Sud (PIS). It covers data on Senegal's population, urbanization rate, housing deficit, and the existence of slums. The PIS program aims to address flooding issues, enhance road infrastructure, and develop essential facilities. The financing sources for the program are also detailed, highlighting the contributions from the Senegalese government, IDA, and AFD. Additionally, the lecture mentions collaborative initiatives like MOOCS for Africa involving EPFL and partners like Edmond de Rothschild Foundation.