Automatic Data Processing, Inc. (ADP) provides cloud-based human capital management (HCM) software and outsourced payroll/HR services to employers of all sizes. The company started in payroll and has expanded into a broad platform covering payroll, benefits, talent, workforce management, compliance, insurance, retirement, and professional employer organization (PEO) services. Its business model combines recurring software and service relationships with large-scale processing, compliance support, and data-driven analytics. ADP serves clients in more than 140 countries and territories, with the United States, Canada, and Europe as its most material markets. A key differentiator is its large proprietary HCM dataset, which it uses to improve automation, analytics, and AI-enabled features across its products.