Preface The Scaling Community of Practice (CoP) launched an action research initiative on mainstreaming scaling in funder organizations in January 2023. This initiative has three purposes: to inform the CoP members and the wider development community of the current state of support for and operationalization of scaling in a broad range of development funding agencies; to draw lessons for future efforts to mainstream the scaling agenda in the development funding community; and to promote more effective funder support for scaling ...

Introduction Despite increasing discussion within the international development community about the importance of scaling, actual scaling activities and the resources devoted to it remain at a low level.  This contributes to the general underperformance of development assistance compared to the need and threatens to prevent the global community from achieving the Sustainable Development Goals (SDGs), delivering on climate change commitments, and achieving the intended results of numerous other global initiatives. While there are many reasons why scaling is not happening, ...