HARMONY is research project that aims to transform how soil health and land dynamics are monitored at regional to global scales. The project develops advanced artificial intelligence (AI) foundation models that harmonize diverse Earth Observation data sources, ranging from laboratory soil spectroscopy to multispectral and hyperspectral satellite imagery. By addressing data fragmentation across sensors, resolutions, and wavelengths, HARMONY enables consistent, scalable, and transferable soil analytics that support sustainable agriculture, climate resilience, and land management decision-making.