World conferences are organized every two years and are events with a global scope, global themes, and a global audience.

International conferences are organized at the initiative of ICDE member institutions and have a regional focus and a regional audience, but often with invited speakers from other contexts which ICDE would help to attract.

Please note the descriptions at: http://www.icde.org/en/about/activities_and_initiatives/world_conference/
and http://www.icde.org/en/about/activities_and_initiatives/regional_conferences/.