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ADP is a global, cloud-based human capital management provider offering payroll, compliance, talent management, benefits administration, and retirement services. The firm also provides human resources outsourcing services, including PEO offerings, enabling clients to reduce HR overhead. Its broad suite serves customers of all sizes across diverse sectors, and the firm holds large shares in its core markets. As of fiscal 2026, ADP counts over 1.1 million clients and manages payroll for more than 42 million workers across 140 countries.

Incorporated in 1911, International Business Machines, or IBM, is one of the oldest technology companies in the world. It provides software, IT consulting services, and hardware to help business customers modernize their technology workflows. IBM operates in 175 countries and employs approximately 300,000 people. The company has a robust roster of business partners to service its clients, which includes 95% of all Fortune 500 companies. IBM's products, including Red Hat, watsonx, and mainframes, handle some of the world's most important data workloads in areas like finance and retail.