Designed, developed, and deployed a secure Commercial Data Exchange enabling the trading of audited billing and accounting data the client’s systems of those of its trading partners. Electronic Bill Pesentment provided invoices in PDF and XML formats enabling trading partners to view, archive, and perform metadata exchanges within their own systems. The system promoted greater collaboration and cooperation between trading partners, reducing errors and processing time while improving cash flow. The facility was built in three-months using Microsoft’s Sharepoint Server with search capability, Windows Communication Foundation, Business Data Catalog, Windows Workflow Foundation, Linq to Sharepoint query services, customized Sharepoint Document Libraries with custom audit trails packaged as features, and single sign-on capability.