MINNEAPOLIS–(BUSINESS WIRE)–Four51, which powers B2B eCommerce for nearly 20 million users and more than 10,000 businesses worldwide, announced today the launch of OrderCloud.io, a headless eCommerce platform that is completely exposed via a RESTful API. Built on over 17 years of experience serving complex B2B domains, OrderCloud.io ushers in a new focus for Four51 on B2B eCommerce developers, systems integrators and other partners needing to deliver customized eCommerce and order management