The World Bank Group is hosting, in collaboration with the multilateral development banks (MDBs), a special side event—Billions to Trillions: Ideas to Action—at the Third International Conference on Financing for Development in Addis Ababa, Ethiopia. This event, to be held on July 13 at the Hilton Hotel from 3:30-5 pm, builds on the ongoing dialogue and collaboration among multilateral development partners, as well as the private sector. The session is designed to showcase the issues, solutions and commitments of the regional multilateral development banks and the role of the private sector as we move forward in support of the post-2015 development finance agenda. The aim is to add a level of concreteness to the conversation on unlocking the resources needed to achieve the Sustainable Development Goals (SDGs). The discussion will focus on new approaches and tools to help countries harness national resources more effectively, give voice to the private sector’s experience and highlight ways to strengthen the public-private nexus.