The universally recognised definition of the concept of sustainable development, which dates back to 1987 and was initially based on the principles of intergenerational and intragenerational equity, has progressively broadened, extending from the environmental to the social dimension. Sustainability implies development that is not only economically efficient, but which is at the same time socially fair and mindful to environmental resources. The SDGs ( Sustainable Development Goals) were introduced by the UN in 2015, as part of the 2030 Agenda for Sustainable Development. There are 17 macro areas of intervention, interconnected, which approximately 200 countries have decided to sign, considering the urgent and unpostponable issues to be addressed with the coordination of their respective policies. The commitment is to raise public awareness, promote and jointly implement, among private individuals and institutions, sustainable lifestyles, production and consumption, for lasting development, with protection of the ecosystem and the renewal of environmental resources and aimed at ensuring that welfare conditions are distributed fairly among all.
