April 18 (Reuters) - Tata Consultancy Services Ltd
* Says Q4 operating margin at 25.7 percent
* Says March quarter gross employee addition of 20,093 employees
* Says March quarter attrition rate 10.5 percent in IT services
* "We have a solid pipeline of deals across markets and industries"
* "On the back of digital adoption, agile, automation and cloud are the themes that we are going to market to drive efficiencies"
* "Continue to invest to support organic growth of digital biz" Source text: (bit.ly/2puZvTt) Further company coverage: