An IES officer functions in technical areas like roads, railways, manufacturing etc..An IAS officer is expected to hold diverse portfolios in his/her career.
IES officers tackle the technical and executive works of the Indian Government. whereas IAS works for the administrative department of the Indian Government.
IES consists of two stages – A written examination and a personal interview. IAS consists of three stages – A Preliminary exam followed by the Mains exam which is followed by a Personal Interview.
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