The rapid emergence of Airbnb in Switzerland is at the origin of this study. The main objective of this work is to describe the development of Airbnb’s offer in Switzerland in terms of temporal and geographical evolution. In addition, the study aims to understand Airbnb’s relative weight compared to the traditional hotel sector and its professionalisation. An analysis at the municipality level gives evidence of a positive link between the Airbnb supply and the tourism intensity of regions. The supply of beds by Airbnb and traditional commercial hotels are the variables under study in this context. As a result, this research highlights the fact that Airbnb mainly reinforces supply in rural tourist regions and large and medium-sized cities, leading to competition with a high hotel supply rather than an expansion of supply in regions where hotel supply is relatively low.