Sustainable Development is a foundational international concept that aims to reconcile economic growth, social equity, and environmental protection. Its most widely accepted definition, established in the Brundtland Report (formally Our Common Future), is "development that meets the needs of the present without compromising the ability of future generations to meet their own needs".
The concept originated from the work of the World Commission on Environment and Development (WCED), which was set up in 1983 and published its landmark report in October 1987. The problem it sought to solve was the critical link between global environmental degradation and the poverty of the South, alongside the non-sustainable consumption patterns of the North. The mechanism of SD works by integrating three interconnected pillars: economic sustainability, environmental protection (ecology), and social equity. Key principles include resource conservation, pollution prevention, and giving overriding priority to the essential needs of the world's poor.
The concept is the foundation for the Sustainable Development Goals (SDGs), which are the current global framework for action. The 17 SDGs and 169 targets were adopted by the UN General Assembly in September 2015 as part of the 2030 Agenda for Sustainable Development and officially came into force on January 1, 2016. This framework replaced the earlier Millennium Development Goals (MDGs), which were in effect from 2000 to 2015. Unlike the MDGs, the SDGs are universal, applying to all countries, and they explicitly integrate the environmental, social, and economic dimensions of development. The concept was also placed on the international agenda by the Rio Process at the 1992 Earth Summit, which adopted Agenda 21.