The nature of HIA and how it made its ways into Switzerland administrative structure is strongly linked to the political functioning of the country. In that perspective, this chapter tackles separately the processes at each institutional level (federal state, cantons states), but also the nexus between them, specifically the Swiss HIA Platform whose purpose is to coordinate and to reinforce the efforts made to initiate HIA in Switzerland. Three founding cantons – Geneva, Jura and Ticino – initiated the creation of this Platform, which is strongly supported by Health Promotion Switzerland. The legal status of HIA in Switzerland, as well on the federal or cantonal level, is an important issue for its specific context and will be analysed. Finally, the weaknesses, opportunities and perspectives for HIA in Switzerland will be discussed.