1. Very few organisations have direct links between end-user computers and national or international networks. Some have no 'outside' links at all, but most expect to connect in some way in the near future.
2. Requirements for response times and service availability vary widely. To satisfy all respondents, EuroView should aim for searches to complete in less than ten seconds. The service should be resilient to the failure of individual components.
3. Organisations want rich data for internal use but wish to publish a much smaller set of information to external clients.