Over the past two decades, the development sector has generated a vast body of rigorous evidence about what works to improve lives. Yet relatively few evidence-based interventions ultimately achieve impact at scale. Many promising programs remain confined to pilots or stall once early funding ends. Bridging this gap requires more than demonstrating effectiveness—it requires ensuring that interventions can be delivered, financed, and sustained within real-world systems.
The Scaling Ingredients Framework provides a practical tool to help funders, policymakers, and implementers assess whether an intervention is ready to scale and what is needed to achieve sustainable impact. The framework identifies six essential ingredients: 1) a clearly defined and relevant problem; 2) strong evidence of cost-effectiveness; 3) a model feasible to implement in the target context; 4) organizations with the capacity to deliver at scale; 5) a sustainable funding or business model; and 6) a supportive policy and institutional ecosystem. Together, these ingredients offer a structured lens for assessing readiness, identifying gaps, and strengthening the foundations for sustained impact.
Complementing the framework is a Scalability Assessment Tool, which translates the framework into practical questions that funders and implementers can use to systematically evaluate scaling efforts and prioritize investments. 
Ultimately, this document serves as a resource for decision-makers to move beyond pilots and ensure that evidence-based solutions reach the populations they are intended to serve.