mzCloud has just reached 10,000 spectral trees assembled from more than 2,000,000 spectra. It is probably not only the largest MSn high resolution library, but the most heavily curated data collection in the field as well. This giant collection is a collaborative effort of many groups, but special thanks to Thermo Fisher Scientific. We at HighChem are really proud of how this relationship has developed and of how the two teams are working together (Tim Stratton, Caroline Ding, Ralf Tautenhahn, Ganka Canagasaby, Ken Miller, Mark Sanders, Clay Campbell and many others).