What is NDA Coaching? It is a professional coaching course that can be conducted either in person or via email. It refers to the name of the certification you need that’s mandatory for everyone who wants to be a doctor, lawyer, accountant or any official professional. Alfa Metis Tech. is the most popular online NDA coaching in Delhi. We offer a variety of NDA coaching services which include Testimonials, resumes, Interviews, Tests and more. Alfa Metis Tech. provides all NDA coaching services at affordable prices.