The Indian Foreign Service (Hindi: भारतीय विदेश सेवा) (abbreviated as IFS) is the administrative diplomatic civil service under Group A and Group B of the Central Civil Services of the executive branch of the Government of India. It is one of the two premier Civil Services (other being IAS) as appointment to IFS renders a person ineligible to reappear in Civil Services Examination. It is a Central Civil service as Foreign policy is the subject matter and prerogative of Union Government.