Aon is a holding company. Through its subsidiaries, Co. provides advice and solutions to clients focused on risk, health and wealth through four principal products and services. Co.'s Commercial Risk Solutions includes retail brokerage, specialty solutions, global risk consulting and captives management, and Affinity programs. Co.'s Reinsurance Solutions includes treaty reinsurance, facultative reinsurance, Strategy and Technology Group and capital markets. Co.'s Health Solutions includes consulting and brokerage, consumer benefits solutions, and human capital solutions. Co.'s Wealth Solutions includes retirement consulting, pension administration, and investments consulting.