Governments at all levels are increasingly required to do more and better with less. They are searching for solutions to improve the quality of public services, the effectiveness of public investment and the fiscal sustainability of public finances. To meet these challenges, co-ordination arrangements between national, regional and local governments, as well as across jurisdictions, are needed, along with subnational capacity building. Countries are also seeking guidance in making decentralisation and territorial reforms happen. This series is part of a larger body of OECD work on regional development and provides international benchmarks based on statistics, analysis and good practices.