Incluye resumen ejecutivo. The cross-sector collaboration approach has grown out of a response to the increasingly complex and interconnected challenges of the 21st century. The demand for innovative solutions and the pressure of the economic recession have exacerbated this complexity and have brought the public sector, the private sector and civil society organizations (CSOs) closer together than ever before. This shift has led development practitioners to assert that cross-sector relationships are not only a pathway to advancing “today’s development agenda, but [they also] hold the keys to scaling the most successful of those projects in the future”.