DataWeb is a joint public development effort being created by the U.S. Census and now directed by the U.S. Census Bureau and the Australian Bureau of Statistics for data networking and policy oriented data presentation. Official data from multiple agencies in both Australia and the United States are  disseminated through a network of hosts distributed  across  agencies in both countries. Thousands of datasets are available, the vast majority of which are freely accessible to the public. These comprise over 6 TB of heterogeneous integrated data in many formats, including hierarchical micro-data, linked tables, aggregated data, longitudinal data, and linked time series formats. The effort focuses on “official” data, but also permits publicly accessible data to be made available. It works with statistical agencies to build a data framework that can access and present “official” data in ways that meet official statistical usage requirements. This focus includes advanced tabulation, integration of analysis across many data sources simultaneously, integrated GIS manipulation and analysis, and a plethora of geographies and official code sets