Cocoa-based agroforestry systems represent a promising solution to the intertwined challenges of agricultural productivity, environmental degradation, and climate change in the tropics. Chapter 1 provides a comprehensive introduction to the multifunctional roles of these systems, particularly in the context of Cameroon, a major cocoa-producing country in Central Africa. The chapter highlights the ecological and socio-economic importance of cocoa agroforests in enhancing soil fertility, conserving soil macro-fauna, and sequestering atmospheric carbon. The chapter begins by outlining the global agricultural and environmental crises, including deforestation, soil degradation, and biodiversity loss, driven largely by unsustainable monocultural farming practices. In response, sustainable land use systems (especially agroforestry) are presented as viable alternatives. Cocoa agroforests, characterized by the integration of cocoa trees with diverse shade species, mimic natural forest ecosystems and offer benefits such as improved nutrient cycling, enhanced soil organic matter, and increased carbon storage. Through a critical review of literature and empirical observations, the chapter underscores the negative impacts of conventional cocoa systems (such as soil exhaustion and biodiversity decline), due to excessive agrochemical use and deforestation. Conversely, cocoa agroforests demonstrate the potential to restore ecological balance while maintaining crop productivity. The chapter also justifies the relevance of focusing on cocoa agroforests in Cameroon by detailing their structural complexity, cultural significance, and emerging roles in climate mitigation through carbon markets. It further identifies major knowledge gaps, particularly in linking macro-fauna diversity with soil fertility and assessing the carbon market readiness of smallholder systems. Chapter 1 therefore sets the foundation for subsequent empirical and policy-oriented analyses by positioning cocoa agroforestry as a model for sustainable tropical agriculture and ecosystem restoration.