B2B Payments platforms optimize how businesses pay their suppliers and vendors — replacing manual check and wire processes with automated, digital payment methods that improve cash flow timing, capture early-payment discounts, and provide real-time visibility into payables. Core capabilities include virtual card programs, ACH and electronic payment orchestration, dynamic discounting, supply chain financing, payment timing optimization, remittance delivery, and integration with ERP and AP systems. The category spans payment networks (Corpay/Comdata, Bottomline, Paymode-X) and AP automation platforms with embedded payment capabilities (Bill.com, Tipalti, AvidXchange).