The extension system referred to as Training and Visitation (T&V), which is currently widely used in Africa, emerged from and was launched from the initiatives of the 1980s to support agricultural extension. Since its introduction, this system has gone through several permutations, informed by the experiences on the ground in each country. In the case of Madagascar, these permutations led to supporting farmers' organizations and diversification of the implementing agencies, which include, outside of the government and its units, non-governmental organizations (NGOs) and private operators.