This report presents a scalability framework, a non-prescriptive tool for designing, implementing, and evaluating scalable programs for sustainable agriculture. The framework provides a set of outcomes that, when fulfilled, help a project achieve scale. These outcomes are communicated in the form of key success factors for scalability. The key factors are useful for a range of stakeholders such as NGOs, government departments, corporates, development financiers, and community-based organizations, among others.