Non-Governmental Organizations are looking for ways to scale up their impact in communities. However, they encounter enormous challenges to find the resources, the people and the networks needed to grow. Crossroads Foundation, a Hong Kong-based International NGO, has been able to scale up through a voluntary, flexible and adaptable governance structure to reach more than 580 thousand recipients in 109 countries. Examining the features and challenges of the internal and external governance structure of Crossroads, this case study provides a framework to understand how social innovation can scale up. This case can be used for topics such as nonprofit management, collaborative governance, social innovation, and scaling up.