The ski resorts were developed in France since the 1930’s. These resorts were only specialized on the alpine ski during the winter’s season. However, the global change imposes an adaptation of the ski resorts. Among the great variety of solutions, we focalize in this paper on the diversification of their offer, and especially the implementation methods of this diversification. This analysis in terms of governance and regional economy conducts to the identification of effective drivers for optimize the implementation of a sustainable tourism in mountain.