Dear Aspirant,

Yes, you can do a MTech in IIT after your MCS degree. The criteria in general is that you should have a minimum 50 percent aggregate in MCA and must have GATE scores that fulfill the requirements of the IIT you'd like to join. Pursuing an Mtech after MCA gives you an opportunity to become a professional in your chosen field and you would also be able to get better packages from companies. Prepare well for GATE. The fees for Mtech in IIT is about 4- 4.5 lakhs.

Hope this helps