This paper is a short review of the pressures that are creating demand for new paradigms and partnerships for development evaluation, and the response to this challenge by IDEAS. The paper contains: An examination of some of the traditional pretexts for evaluation, driven by supply of aid and the demand for accountability; A description of the increasing efforts towards achieving sustainable development and poverty reduction, through responsive and accountable governance; An outline of some of the principles which are inspiring a re-thinking of development evaluation; and A review of the prospects of the International Development Evaluation Association (IDEAS) as an emerging global forum for creating synergies among diverse evaluation communities.