The project monitors and simulates the Algarve's tourism competitiveness against Spain's 5 Mediterranean NUT II (Andalusia, Murcia, Valencia, Catalonia and Balearic Islands), using a Decision Support System on an open access online platform. This platform is not an end in itself, but rather the starting point and support tool for interaction between the knowledge generated and users, materialised in physical actions with agents in the tourism sector through publications, reports and communications. At the same time, in an operational way, it analyses and transmits data in seven dimensions: accessibility, accommodation, business, products, social intensity, seasonality and a CO2 simulator. The presence of the CO2 carbon footprint simulation of the tourist's transport to and from the destination, together with the other dimensions, is innovative in terms of tourism SAD, empowering partners through knowledge in the approach to a set of Sustainable Development Goals.