Post-2015 Development Agenda represents the transition period from Millennium Development Goals, which will expire at the end of 2015, to the Sustainable Development Goals. The unfinished mission of the MDGs will be completed with the launch of the SDGs. On 2014, UN General Assembly`s Open Working Groups forwarded their proposals of the 17 goals covering a variety of sustainable development issues ranging from ending poverty, improving health and education, making cities more sustainable to combating climate change.
Pictures source: http://sustainabledevelopment.un.org/