A new publication from UNCTAD explains step-by-step the process of implementation of a Single Window interface within the ASYCUDA system with the advantages that such interface offers. ASYCUDA is a customs management system developed by UNCTAD that allows the electronic processing of customs declarations and the exchange of data and documentation between Customs, cross-border agencies and traders. Adopted by many African Customs, it accelerates the clearance of imports, exports, transit trade and other trade transactions, thereby reducing the need for face-to-face interaction.