Two of the most important and long standing challenges for evidence synthesis in international development are: 1) The need to provide timely (eg. rapid) responses to demands for evidence to inform decisions; 2) Developing capacity to do high-quality, policy-relevant syntheses, especially in L&MICs. At present these challenges are typically addressed in isolation.

So, 2015 has arrived and the Millennium Development Goals (MDGs) are to be replaced by the Sustainable Development Goals (SDGs). But shouldn’t we stop and ask how we have done on the MDGs first? “How we have done” can be seen an outcome monitoring question: have the targets been reached? But since we have fallen far short on some targets, such as access to improved sanitation, we need to dig deeper and ask which policies have been successful in helping achieve the targets.

Whether you are a research funder, decision maker or researcher, keeping up with the ever expanding evidence base is not easy. Over 2600 impact evaluations and 300 systematic reviews assessing the effects of international development interventions have been completed or are ongoing to help answer that question and understand how, why and at what cost.  Despite this increase in quality evidence, more evidence is needed, which is why funders and researchers continue to fund and produce new research.