This IDC study ranks the top 10 services vendors by the three major services macromarkets of project-oriented, outsourcing, and support and training services as well as five vertical sectors: financial services, manufacturing and resources, distribution and services, infrastructure services, and public sector.

"While the top vendors like IBM, EDS, Accenture, and HP remain strong and achieve top positions in many vertical sectors, offshore services firms like Infosys, Wipro, and TCS are climbing up the ranks and appearing in the top 10 spots in a few key sectors such as infrastructure and distribution services, particularly in project-oriented services markets," states Jony Moe, research analyst, IDC Services Vertical Views. "Going to market by industry is particularly important in the services marketplace. In order to deliver real business value, it is critical for vendors to understand the key challenges faced by specific industries and develop innovative ways to address those challenges through the application of IT."