Marsh & McLennan Companies (MMC) is a global professional services firm headquartered in New York City. MMC provides a broad spectrum of advisory and consulting services in the domains of risk, strategy, and people. It operates through four primary subsidiaries: Marsh, Guy Carpenter, Mercer, and Oliver Wyman.Marsh specializes in insurance broking and innovative risk management solutions, Guy Carpenter provides risk and reinsurance intermediary services, Mercer delivers insights and solutions related to health, wealth, and career, and Oliver Wyman serves as a management consulting firm with focus on strategy, operations, risk management, organizational transformation, and leadership development.Together, these companies enable MMC to cater extensively to the needs of clients ranging from small enterprises to large multinational corporations by helping them manage risk, optimize benefits, cultivate talent, and expand the power of capital to protect and strengthen institutions and individuals. The company's global reach and deep expertise are complemented by a robust commitment to responsibility and sustainability.