Deputation of IFS officers to the Central Government also includes appointments in other Ministries, Departments, Institutes, Academies etc. Deputation of IFS officers is also permissible to foreign governments, UN bodies, international organsiations, NGOs, voluntary organisations apart from private sector as per the above rules. For details may refer to the latest instructions of DoPT, GOI issued in this regard which can be accessed from the IFS web site.
There are two schemes devised for the purpose of regulating appointments in Government of India and organisations under its control.