Why synthesize evidence on the SDGs?

We are halfway to 2030, the deadline for achieving the SDG targets. This is an ideal time to synthesize the existing evaluative evidence to generate findings and lessons on what works and in which contexts. Evaluation synthesis involves systematically and comprehensively collating evidence from evaluations on progress towards the SDGs. This allows us to learn what works, how it works, where it works, and for whom it works. It also allows us to identify barriers and enablers for change and innovation. This can help us decide on the best ways to accelerate progress towards the SDGs.