Marsh McLennan is a global professional services firm that provides advice and solutions in the areas of risk, strategy, and people. It operates through several well-known subsidiaries, including Marsh, Guy Carpenter, Mercer, and Oliver Wyman. The company helps clients manage risks and improve their performance across various industries. Founded in 1871 and headquartered in New York City, Marsh McLennan serves clients in over 130 countries. With a strong focus on innovation and data-driven insights, the firm aims to deliver tailored solutions that address complex challenges faced by organizations worldwide.