H2020 project ConnectinGEO presented and pushed forward the state-of-the-art on Essential Variables (EVs) and one of the ERA-PLANET Transnational Call Projects- GEOEssential/ERA-PLANET, picks up on this work and aspires to demonstrate the feasibility of EVs across GEO SBAs, via demonstration workflows that will be using EVs served by the GEO infrastructure, to derive policy relevant indicators.