The Cooperation and Support Action EU-IoT is organizing an online Hackathon with a focus on Mobile Sustainable IoT solutions to encourage developers, students, researchers to discuss, cooperate and develop open-source solutions focused on the EU-IoT scope area: tactile Internet/Human-centric interfaces); Near/Far edge aspects; Infrastructure; Data spaces. For each proposed challenge domain, there is the possibility to develop three different types of projects or you can also propose an additional project of your own.