The VLAB Workshop was successfully held on 26-28th of February 2019 at the CNR Research Area of Sesto Fiorentino (FI), Italy. Over 40 people, representing all the ERA-PLANET strand projects partners, attended the event. The main goal of this three-days Workshop was to give an opportunity for participants in the ERA-PLANET project to work together on the vision and implementation of the ERA-PLANET Knowledge Platform, discussing and experimenting the functionalities and planned