15th Replenishment of the African Development Fund (AfDF 15) The AfDF contributes to the economic and social development of Africa’s poorest countries through investment in infrastructure, regional integration, private sector development, governance and accountability, and skills and technology, to promote inclusive and green growth, with special attention to fragile states and girls, youth and women. The AfDF is the concessional lending and grants arm of the African Development Bank (AfDB) that operates in the 38 poorest, vulnerable and fragile countries to promote economic and social development.