Discover Financial Services is a leading financial services company known for its credit card services, banking products, and payment services. They generate revenue primarily through interest income, fees from cardholders, and transaction processing fees from merchants. Founded in 1985 as a subsidiary of Sears, Discover became an independent entity in 2007 and has since expanded its offerings to include personal loans, student loans, and online savings accounts. The company's innovation in digital banking and commitment to customer service are key aspects of its business strategy.