The report builds on a 2014 assessment by the United Nations Environment Programme, which laid out the concept of adaptation gaps and outlined three such gaps: technology, finance and knowledge. Like the 2014 report, the 2016 report focuses on developing countries, where adaptation capacity is often the lowest and needs are the highest, and concentrates on the period up to 2050, as the short to medium term is considered the most relevant for decision-making related to adaptation. The report highlights trends and challenges associated with measuring progress towards bridging the adaptation finance gap, while informing national and international efforts to advance adaptation. It analyses adaptation finance against the background of the provisions laid out in the Paris Agreement, and benefits from the insights included in the NDCs.