UDENE “Urban Development Explorations Using Natural Experiments” using Copernicus Satellite data and Local Earth Observation Sources project! UDENE aims to revolutionize urban development planning by harnessing the power of Earth Observation (EO) data from Copernicus satellites and local sources. The Tunisian Space Association (TUNSA) and in collaboration with esteemed partners such as WeGlobal, NIK, Eurisy, TOBB ETÜ, Inosens, BioSense Institute, and Politecnico Milano 1863, UDENE seeks to create a virtual laboratory for urban planners and visionaries to test the impact of their ideas in a safe, sustainable, and resilient manner. The core of UDENE is its Exploration Tool, a platform merging remote sensing data with on-site observations for scenario-based projections. TUNSA is pivotal in establishing a robust data cube infrastructure and gathering in-situ data from Tunisia, Turkey, and Serbia. Using Copernicus DIAS services and cloud-based data, UDENE empowers stakeholders to make evidence-backed decisions on urban development. In Tunisia, UDENE evaluates the impact of park systems on heat loads in the Greater Tunis area, engaging citizens in the data collection process. In Turkey, the focus shifts to earthquake preparedness, particularly in high-rise building districts in Istanbul, a densely populated urban area near active fault zones. Meanwhile, in Serbia, UDENE analyses the effects of constructing a ring-road on traffic congestion and air quality in Novi Sad, utilizing local traffic metrics to inform decision-making. By bridging the gap between EO data and urban development, UDENE aims to enhance life quality, promote sustainability, and bolster resilience in cities across the globe.