START 404 invites students from different backgrounds to profiles to interact with each other and to reflect on study cases that highlight specific issues around a issues around a theme. After introduced to the technologies in question, the objective is to improve the understanding of the technology while developing concrete solutions to the solutions to the problem based on these innovative innovative technologies. In order to promote a high level of diversity, participants from no less than 3 different cities (Lausanne, Paris and Dakar) who are gathered in this hackathon. In addition, by bringing together students from various backgrounds (engineering, management, etc.), the groups combine both the technical and the business side of things, allowing the creation of and complete projects.