Automatic Data Processing, Inc. is engaged in providing business outsourcing solutions. ADP offers a range of human resource (HR), payroll, tax and benefits administration solutions from a single source. ADP is also a provider of integrated computing solutions to automotive, heavy truck, motorcycle, marine and recreational vehicle dealers globally. The segments of the Company are Employer Services, Professional Employer Organization (PEO) Services and Dealer Services.
Central Trust Bank, Amazon, Lenovo, Honeywell etc. (https://www.adp.com/who-we-serve.aspx)