"The project ""KISS: the Key Is Social Sustainability"" aims to contribute in promoting the sustainability of the initiatives of Social and Solidarity Economy (SSE) between its current actors and those young people who want to enter the sector. One of the major challenges faced by associations, cooperatives and other initiatives of the SSE, as well as those young social entrepreneurs, is the high dependence of their initiatives from public subsidies. This lack of sustainability (economic, but also social, environmental, of labor and political) conditions and makes them more vulnerable. Responding to the need of strengthening the sustainability of SSE initiatives, and using the potential of the intellectual products developed during the ""ISSE, community Works!"" project, we intend to promote a new European Strategic Partnership project that will benefit from the work of 9 Partner organizations from 4 countries (France, Italy, Greece and Spain) from the educational sector, youth work, the economy and the public sector: universities, non-formal education organizations, training centers, cooperatives and chambers of commerce. Over 2 years, the project aims to achieve the following specific results: - Create a network for the exchange of good sustainability practices in the field of SSE (with a local impact), exploring the different dimensions of sustainability and directly benefiting 44 participants among technicians, professionals and managers of the partner organizations and other organizations involved in the project, with a special attention to young people who want to start as entrepreneurs in SSE; - Develop and implement training modules on sustainable social entrepreneurship, training about 56 participants among technicians, professionals and managers, with special attention to young SSE entrepreneurs; - Create sustainable development plans of the organizations of origin of the young participants; - Collect good practices, training modules on sustainable social entrepreneurship and sustainable development plans already created and make them available to stakeholders and all those who want to promote sustainability within an SSE initiative; - Strengthen the capacities of the consortium organizations to improve the coherence and sustainability of their SSE proposal; - Consolidate a consortium of organizations from different sectors of society and different European countries, interested in promoting sustainability within social entrepreneurship, especially among young people. The project plans to achieve these results through the following activities: - the creation of the project website, showing inspiring good practices in sustainability within the SSE; - 3 transnational meetings of the consortium partners: initial, intermediate and final; - 4 study visits, one in each country, to publicize successful sustainable practices within the SSE. Each visit will address the issue of sustainability by focusing on a specific topic of interest: social inclusion through the participatory approach (in Spain); local social development in response to the crisis (in Greece); cooperation with public policies (in France); social innovation through non-profit cooperation (in Italy); - 2 international training courses focusing on sustainability within social entrepreneurship (social participation and sustainability, and innovation and sustainability policies), using the intellectual results of the ""ISSE, community works!"" project; - the development of sustainable development plans for all the organizations involved (mapping of budget proposals and support services), through the participants of the training; - 1 international learning seminar on governance, teamwork, cooperation and sustainable development plans, aimed at developing cross-cutting skills and improving sustainable development plans; - the compilation in a booklet of the good practices of sustainability within the SSE shared by the partners and of the sustainable development plans elaborated by the entities involved. This is the contribution of the current project for the promotion of a sustainability perspective within a value-based economy and for a participatory society."