Hello!

First of All you should check that you fulfill the eligibility for admission in IIIT .

The Eligibility are :

Candidates can get admission at IIIT on the basis of total marks obtained in Paper 1 of JEE Main and aggregate in Class 12th or any other equivalent exam.

Your 10+2 aggregate must be above 80% in the aggregate and 80% or more in Mathematics in class XII from any board.

They take Admission through the following processes :

1.Through JEE MAINS SCORE .

2.Through IIIT Hyderabad UGEE 2020:

Authorities will conduct UGEE entrance exam to give admissions to students in all research-based dual-degree Programme.

3.  Through Special Chance of Admission (SCA):  This is for admissions to single degree B. Tech. (ECE/CSE) programs.

You can go to the link to get more information:

https://www.google.com/amp/s/engineering.careers360.com/articles/iiit-hyderabad-btech-admission/amp

Hope this Helped!

Best of  Luck!