The Sentinel-2 Radiometric Validation Intercomparison Workshop took place at ESRIN on 31st January 2018 following the Sentinel-2 Validation Team. Participants were from ESA, ACRI-ST, ARGANS, CNES, CS-SI, NASA, NPL, Rayference, University of Arizona, USGS. For more details, please consult the intercomparison workshop webpage.