15 February 2013 – The OASIS international open standards consortium announced the approval of version 1.0 of the Applicability Statement 4 (AS4) Profile of the ebXML Messaging Services (ebMS) 3.0 standard. Based on “just-enough” design principles, the Profile provides an open standard for the secure, payload-agnostic exchange of purchase orders, invoices, and other business-to-business documents using Web services. AS4 is now an official OASIS Standard, a status that signifies the highest level of ratification.