ESA selected Thales Alenia Space in France as the main contractor to develop the module, which is in the preliminary design phase until next year, after which a detailed design phase will occur followed by manufacturing. Initially, the pressurised structure of the module will be built in Turin by Thales Alenia Space, with contributions also from Thales Alenia Space in the United Kingdom and OHB. Once built, the module will be tested before delivery to NASA ahead of its launch.