2019-6-28 · What is Business Process Outsourcing? Between 2012 and 2016, the global business process outsourcing (BPO) industry grew at a compound annual growth rate of 4.4% to reach total revenues of $140.3 billion in 2016.. Business process outsourcing is a subset of outsourcing that involves contracting third-party service providers for various business-related operations and responsibilities.