This is the strongest December quarter growth in nine years, TCS said. 

"Growing demand for core transformation services and strong revenue conversion from earlier deals have driven a powerful momentum that helped us overcome seasonal headwinds and post one of our best performances in a December quarter," Rajesh Gopinathan, chief executive officer and managing director at TCS, said. 

He added that the company is entering the new year on an "optimistic note" and its market position stronger than ever before. 

Gopinathan said TCS' confidence reinforced by the "continued strength in our order book and deal pipeline".