PSI is a global non-governmental organization (NGO) that works to reduce the amount of suffering by people in the developing world due to reproductive health and non-communicable diseases. One research approaches that PSI employs in order to ensure the most effective use of resources is Measuring Access and Performance (MAP). A cornerstone of this approach is to recognize the relationship between the population’s need and the delivery system coverage and quality. This inherently geographic approach uses GIS to determine whether or not supply for services is meeting the demand. PSI is able to do this because of an agreement with the World Health Organization that allows PSI to access data and software crucial to the spatial analysis.