Of the Top Ten IT Services Companies in the world, ADP ranks 9th, with $8 billion in revenue (source: Gartner). This makes ADP the largest supplier of payroll and HR administration services in the world, and, according to Gartner, 'the original HR Business Process Outsourcer (BPO)'.

Being the largest though doesn't mean ADP only provides services to the world's largest companies. In fact our client statistics show that it's because ADP's modern service portfolio is so successful in delivering 'best-fit' solutions to every size of organisation across the world that has made us the biggest. Here are a few facts: