The book reveals, for the first time, the origins, growth and complex role of the OECD as it celebrates its fiftieth anniversary, showing how it has adapted - for the most part successfully - to the changing needs of its members, both large and small. Peter Carroll and Aynsley Kellow provide a comprehensive account and analysis of the origins, development and, most intriguingly, the recent reforms that characterise the OECD. They argue that this increasingly complex organisation has fulfilled its design to be an adaptive, learning organisation and explore how the OECD has spread its wings beyo.