Methodologies for mutual accountability and Mutual Reviews of Development Effectiveness in Africa (MRDE) developed by the UN Economic Commission for Africa and the OECD, in consultation with African partners, international research and civil society institutions, have been tested and developed over recent years. The MRDE process is an example of a regular joint monitoring process of development commitments, delivery, results and identification of priorities regarding Africa. While limited to a region and broader in scope (given the number of sectors covered), it can provide some lessons to inform the development of a tracking system tailored to AR4D globally.