Global Purchasing Outsourcing Market By Type (Direct/Indirect Outsourcing, Multi-Sourcing, Joint Venture, and Captive Entity), By Application (Manufacturing Sector, Software and Telecom Sector, Energy and Chemicals Sector, Automotive Sector, and Pharmaceuticals Sector), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028