With its closed-loop business model, American Express stands apart from its competition, including Visa, Mastercard, Bank of America and others. Its customers are known for their premium spending and high creditworthiness, which results in increased revenues and the ability to offer larger lines of credit.  Amex's spend-centric model, strong digital presence, and premium brand make it a dominant player in the industry. Its rewards program and market share of corporate spending are unmatched, making it a preferred choice for startups, small businesses, and corporations globally.