ADP, based in Roseland, New Jersey, has been a leader in payroll, HR, and workforce solutions since 1949. Serving over 1 million clients in 140+ countries, ADP offers cloud-based tools to simplify payroll, HR management, compliance, and employee engagement.

The vendor is a top-ranked HR technology provider, winning awards for innovation, customer service, and payroll. It has been named one of Fortune's "World's Most Admired Companies" for over 16 years. The company is also known for strong data protection, being an early adopter of EU-approved Binding Corporate Rules (BCRs) for data processing and control.