The European Environment Agency (EEA), as one of the entrusted entities for the Copernicus Land Monitoring Service (CLMS), is developing the CLC+ Suite of products to modernise and extend the capacity of Europe’s land cover and land use monitoring. At the heart of this initiative lies the CLC+ Backbone, a geospatial reference layer that integrates authoritative national datasets from Mapping, Cadastral, and Land Registration Authorities with satellite-derived land cover data. A practical example is Iceland’s IS 50V geospatial database, which provides continuously updated datasets such as land cover, land use, transportation, hydrology, coastal boundaries, structures, contour lines, height points, and place names. By combining traditional authoritative datasets with modern remote sensing, GNSS tracking, and aerial imagery, the CLC+ Backbone creates a harmonised, pan-European geospatial baseline. This foundation supports the production of CLC+ Instances—tailored products designed to meet EU policy objectives, including climate monitoring, environmental protection, and the European Green Deal.