The document summarizes the roles and functions of the Social Security Administration (SSA). SSA administers two main programs: Social Security (OASDI) which provides retirement, disability, and survivor benefits financed by payroll taxes; and Supplemental Security Income (SSI) which provides income supplements for low-income elderly, blind, and disabled people financed by general tax revenues. Over 54 million people receive benefits from these programs. The document outlines the application and review process for benefits, as well as the roles of different departments within SSA responsible for processing payments, handling exceptions, and continually improving operations through technology and relationship building.