Invoice Stream Invoice Stream and Usio Form Strategic Partnership Share Written By Niren Naidu Tags Invoice Stream 2019-12-10 Usio Announces Strategic Partnership Agreement with Invoice Stream, Inc. to Create a Best-in-Class Invoice-to-Pay Solution for Small to Medium-Sized Businesses. Combined Solution Will Offer an Integrated Electronic Invoicing and Payments Platform Leveraging Usio’s Proprietary PayFac-in-a-Box and Driving Bi-directional Growth in the B2B Sector.