Sage Payment Solutions (SPS) was purchased six months ago by private equity firm GTCR for $260 million. SPS recently changed its corporate name to Paya as part of its transition to an independent company, one no longer a business unit of U.K.-based Sage Group. Paya handled its parent company’s payment processing and data exchange services and gathered much of its nearly 100,000 small and midsized customers in the U.S. and Canada from companies that used Sage Group’s enterprise software for accounting and business management services. Paya has moved to a new platform and reformulated its...