The global food system is challenged by population growth, climate change and environmental degradation, leading to global increase in demand and local decrease in supply. Millions of smallholders in West Africa are responsible for 70% of the global cocoa supply from monoculture and agroforestry systems, which provides them food and income essential to their food security. However, current yields average 400 kg/ha while potential production exceeds 5000 kg/ha. A large proportion of the plantations are old and/or neglected and insufficient use of farm inputs further reduces productivity. This project aims for science-based, sustainable intensification of cocoa production assuring high and stable production now and under future climate change and policy scenarios. We provide integrated crop-, field- and farm-level research exploring technical and socio-economically feasible options. Next to delivering soil-, crop- and farm decision support models, we deliver models to support effective service delivery at scale by public and private partners.