Paper, plastic, or digital -- in whatever form, First Data moves the money. One of the world's largest electronic payments processors, First Data serves more than 6 million merchants and some 4,000 card issuers in some 35 countries. It provides a variety of secure funds transfer and related services including credit card payment processing, fraud protection and authentication, check guarantee (through subsidiary TeleCheck), electronic bill payment management, and point-of-sale (POS) services. First Data operates through three primary segments: retail and alliance services, financial services, and international. It owns a majority stake in Bank of America Merchant Services. Investment firm KKR owns First Data.