Description (short summary): This volume presents the findings of the workshop on Advanced Regional Spatial Data Infrastructures (SDIs) organised by the European Commission Joint Research Centre in May 2008. The objectives of the workshop were to review the state of progress, analyse the different organisational models established with local and national stakeholders, and assess the social and economic impacts of the regional SDIs. Eleven regional/sub-national SDIs in Europe are presented in the report: Lombardy and Piedmont (Italy), Catalonia and Navarra (Spain), Wallonia and Flanders (Belgium), North-Rhine Westfalia and Bavaria (Germany), Northern Ireland (UK), Brittany (France), and Vysočina (Czech Republic). These experiences are set in...