The AEO (Authorised Economic Operator) concept is based on the Customs-to-Business partnership introduced by the World Customs Organisation (WCO). Traders who voluntarily meet a wide range of criteria work in close cooperation with customs authorities to assure the common objective of supply chain security and are entitled to enjoy benefits throughout the EU. The programme aims to enhance international supply chain security and to facilitate legitimate trade and is open to all supply chain actors. It covers economic operators authorised for customs simplification (AEOC) and others. The certificate was prepared by European Commission.