Hello Abhishek,

Home State Quota in IIT Josaa counseling means few seats will be reserved for  candidates belonging to the State where the Institution is located will be consider under Home State quota and can avail Home State quota benefits if they are eligible.

Other State Quota in IIT Josaa Counseling means few percentage of seats will be alotted to candidates who belong to some other State other than the State where the Institute is located, that means candidates who studies in other State Institutions are considered as Other State Quota and can avail Other State Quota benefits of eligible in IIT Josaa Counseling.

All India Quota in IIT Josaa Counseling means few percentage of seats are reserved and all candidates across the country can avail those seats if eligible that means all candidates are considered under this Quota both Home State quota Candidates and Other State Candidates and any other Category Candidates are considered irrespective of candidates Caste, Category, State, etc.

I hope this information was helpful.

Good Luck!!