What are the internationally renowned service outsourcing enterprises?

Internationally renowned service outsourcing companies include International Data Corporation (IDC), McKinsey, A.T.Kearney, Gartner (NYSE: IT and ITB), Bi Bo, Haihui Technology International Co., Ltd., Vance Information Creative Software Technology Co., Ltd., Neusoft, genpact, Hewlett-Packard Development Company, Wipro Technologies, Tata Consulting Services, Capgemini, Sourdis Group and Infosys Technologies.