Citigroup Inc. (Citi) is one of the world's largest and most globally connected financial institutions, operating across more than 160 countries and jurisdictions. The company's business model is structured around five core interconnected segments: Services (including treasury and trade solutions and securities services), Markets (equities, fixed income, and commodities trading), Banking (investment banking, advisory, and corporate lending), Wealth (private banking and wealth management), and U.S. Personal Banking (retail banking and branded/co-branded credit cards). Citi derives its revenue from a mix of net interest income from lending and deposit-taking activities, as well as non-interest revenue from trading, investment banking fees, and wealth management commissions. The firm is particularly renowned for its Services division, which provides critical cash management, trade finance, and custody solutions to multinational corporations, financial institutions, and governments. In recent years, under CEO Jane Fraser, Citigroup has undergone a significant strategic transformation, divesting multiple international consumer banking franchises to focus more heavily on its institutional businesses, wealth management, and its home-market U.S. personal banking operations.