A Single Window is defined as a facility that allows parties involved in trade and transport to lodge standardized information and documents electronically with a single entry point to fulfil all import, export, and transit related-related regulatory requirements.
The development of a single window environment to facilitate trade or cross border movement of goods is a modern initiative that has been under consideration by a number of international organisations, such as the World Customs Organisation, United Nations, as well as several Customs Administrations across the world.
The WTO Trade Facilitation Agreement encourages all its members to set up a Single Window in (Article 10.4). The International Chamber of Commerce Custom Guidelines 2012 also support the use of a national Single Window. The various International Organizations encourage Governments across the world to establish a Single Window environment as an important building block toward trade facilitation.