BILL is a financial operations platform for small and midsize businesses that automates back-office functions including accounts payable, accounts receivable, spend management, and payments. The company serves hundreds of thousands of businesses through subscription fees and transaction-based revenues, operating a proprietary business-to-business payments network that processes billions of dollars annually. The platform generates strong network effects as customers paying and receiving invoices attract suppliers and clients to join, while leveraging transaction data and machine learning to enhance product capabilities and maintain low fraud rates.