IIITs (Indian Institute of Information Technology) are institutes from which 5 of them are  managed by MHRD (Ministry of Human Resource Development) and others by public-private partnership. The branches of IIITs managed by MHRD are as :

1. IIIT Gwalior
2. IIIT Allahabad
3. IIIT Jabalpur
4. IIIT Kancheepuram
5. IIIT Kurnool
   And others are managed by PPP
   IIIT has it's own exam called IIIT UGEE.
   Note : IIIT UGEE is an entrance exam conducted by IIIT for it's dual degree courses. (B.Tech + M.Tech).
   To appear for IIIT UGEE, the eligibility criteria is that one has to pass Class 12 board exam with 60% aggregate marks in the three subjects Physics, Chemistry, and Mathematics.
   
   
   Students who will qualify for IIIT UGEE will be called for the interview. Admission process will be carried out only if one gets qualified in the interview process.
   Placement of IIITs : In 2019, average salary from IIIT Hyderabad was 21 lacs per annum and highest salary was 40 lacs per annum.
   Companies like Accenture, Flipkart, Cognizant, Uber, etc. come to recruit students of IIIT.
   Amongst all the IIITS, placement record of IIIT Hyderabad is one the best.
   
   For branch wise cut off of previous year IIIT admission, read this article : Branch-wise cut off of top IIITs
   
   Hope this helps. :)

All the best !