This document discusses the progress made towards achieving the Millennium Development Goals and outlines some of the challenges that remain. It then introduces the new Sustainable Development Goals that were adopted in 2015 to build upon the MDGs. Several of the targets under SDG 1 to end poverty are examined in more detail, including proposed indicators and issues around measuring progress. Key challenges discussed include defining targets precisely, having reliable and comparable data across countries, and setting realistic targets given the capabilities of different countries.