The Mission of ONCE is to provide marketplace operators, their suppliers and customers, service providers and others dedicated to B2B e-Commerce, a collaborative forum to advance global trade, while being the leading authority and advocate for its Members on issues affecting international electronic commerce. An "on demand" organization dealing with the common issues of its Members as they arise and when there is a need, ONCE is focused on responding to its Members by creating standard solutions that enable the acceleration and growth of online trade.