Aon in February 2017 sold its human resources business process outsourcing (BPO) platform and operations to private equity firm and alternative asset manager Blackstone for $4.3 billion plus an additional $500 million earn-out based on future performance. Closing is expected by the end of the second quarter of 2017. The sale, according to Aon’s website, is a “natural extension of the strategy the firm has pursued over the last