OSM has revolutionized geography. It is the ‘Wikipedia’ of mapping: anyone can edit the map by tracing features such as roads and buildings against free, high-quality satellite imagery. In contrast to other map services, the platform is entirely open: anyone can download a layer of the roads and buildings that make up the map. It is built for the people, by the people, in all regions of the world. It epitomizes the best features of open digital collaboration: leading-edge technology made freely available to all, regardless of location. Because everyone can contribute, OSM maps are often much more complete than commercial alternatives—especially in areas that are hard to survey, such as informal settlements].
The World Bank makes frequent use of OSM for research purposes, and occasionally supports one-off initiatives to complete OSM maps in specific areas, e.g. after natural disasters (Nepal and Haiti are recent examples). But we have put less effort into nurturing the community of altruistic mapping volunteers who make OSM so special, and play a critical role in keeping the map updated over time.
A recent series of initiatives, however, is bucking that trend.