The top four outsourcers on Everest Group’s annual ranking of the top IT service providers has remained unchanged this year, with Accenture taking the top stop for the third year in a row. However, the real headliner may be the outsourcing market itself, which grew nearly 9 percent over the previous year in constant currency terms. “This momentum in growth was visible across the top four in the IT services categories Everest Group evaluated,” says Everest Group vice president Panku Miya. But an increased reliance on outsourcing wasn’t the only thing boosting Accenture, TCS, Cognizant, and Wipro to the top of the charts. “The top four invested significantly in enhancing their capabilities.