Hey Aditya Jain,

Yes, IBS admission procedure is through IBSAT or NMAT. IBS considers IBSAT marks. The selection is purely based on IBSAT marks With GD and PI too! As you have previoulsy replied to an answer you can get your answer here!

Admission in MBA is done on the basis of performance in IBSAT followed by a Group Discussion and Personal Interview. For MBA Executive, admission is done on the basis of merit.

CAT/GMAT or NMAT by GMAC qualified students are also eligible to apply and they need to appear in the interview round only.