Geographical research in Italy has developed a method called STeMA to assess how policies and programs affect the environment and economy of different regions. This method uses GIS technology to support European research projects. By using common scientific indicators, the method helps evaluate the impact of EU policies on regional development. The goal is to create cohesive and competitive sustainable development in various target areas. The method also focuses on territorial diversity and aims to correct any negative effects of policies. By following specific rules and procedures, territorial governments can improve planning culture and benefit investors, businesses, and citizens.