TCS COO N Ganapathy Subramaniam retired on Monday. Subramaniam was appointed as TCS COO in February 2017, serves as the Additional Director and Chairman of Tata Elxsi since November 2014 and has been with the company for over 40 years. CEO K Krithivasan had earlier said that the company will not be appointing a new COO following Subramaniam's retirement.