The PGAUI program seeks to identify possible areas of inter-municipal collaboration and promote the corresponding initiatives. Among other topics, the program aims to diagnose the strategies and tools of economic promotion in the metropolitan area of Puebla-Tlascala with the aim of integrating aspects of sustainability and strengthening inter-municipal cooperation in this area. As in Germany and Spain the concept of metropolitan areas and inter-municipal cooperation has a longer history, it is assumed that there are interesting initiatives that can be of benefit to Mexico. The comparison between Spain and Germany can also show the different approaches that are possible in this topic. The specific objective of this consultancy is to develop a guide of good practices of inter-municipal economic promotion in Metropolitan Areas in Spain.