Also, over 100 cities engaged in the City Prosperity Initiative have monitored urban expansion and population growth using the same methodology applied for the global sample of cities. Taking advantage of international meetings, specialized trainings were rovided to the large public on the definition, concepts and methods to measure this indicator. Further capacity-building efforts targeting NSOs and local governments are planned for 2018-2019 to promote the monitoring and reporting of the indicator. These technologies, when combined with ground-truthing support the development and refinement of models which can be applied at local, national, regional and global scales to generate high accuracy data for monitoring.