Marsh McLennan is a global professional services firm offering insurance brokerage, risk management, reinsurance, talent management, and management consulting services. Its main subsidiaries include Marsh, Guy Carpenter, Mercer, and Oliver Wyman. The company serves individuals, businesses, and governments worldwide. Marsh McLennan's unique selling proposition lies in its comprehensive suite of services that address both risk and human capital needs, providing clients with integrated solutions to manage strategic, operational, and financial risks. This integrated approach sets it apart as a leader in the professional services sector.