UPSC with regard to Appointment by Promotion/ Deputation
Union Public Service Commission is a Constitutional Body constituted under Article 315 of the Constitution of India. The functions of the Commission are laid down in Article 320 of the Constitution. As per Article 320 [(3) (b)], the Commission shall be consulted by the Government on the principles to be followed in making appointments to Civil Services and Posts and in making promotions and transfers by deputation from one service to another and on the suitability of candidates for such appointments, promotions, or transfer by deputation.