Common strategy for innovative and sustainable socio-economic development of rural areas in the SUDOE area based on their cultural and natural heritage: Co-design of the strategy – model of rural socio-economic development based on the cultural and natural heritage of the SUDOE space. The objective is to generate territorial attractiveness, helping to establish population and attract sustainable tourism (interested in ecological, cultural, artistic and social aspects) thanks to the preservation, reuse and enhancement of heritage. The strategy will contain different elements necessary to achieve the socio-economic development of rural territories based on their heritage (training of local agents, readaptive use of heritage, generation of artistic-cultural activities, public-private partnerships as well as the construction of networks). PP4 will draft the strategy with contributions from all partners and taking into account the results of WG2 activities. In WG 3, we consider testing different elements of the Strategy. To this end, there will be a common share of all partners, including the development of a participatory governance system (A3.1); design of an action plan translating the strategy into concrete measures (A3.2) and training for local actors (A3.3). Together with this common part, a thematic pilot will be developed per country that will test one or more elements of the strategy, depending on the needs of each territory. The Strategy will be adopted by all project partners (except PP4) in the first quarter of 2026.