Administration 2000 is the first solution that combines legacy applications of different local administrations in order to offer a One-Stop Shop solution to citizens and private enterprises. The solution uses the Internet technology for a high secure and modern Intranet application and will be extend to a real Internet application later. The solution follows consequently the so called life event approach and also integrates services from private companies that belong to the specific life events. Besides the implementation of new technology the solution requires a paradigm within the public administrations and its business processes. In most cases the solution requires new contracts among the participating administrations and can lead to a change of the respective laws that define responsibility and process of the services.