The UPSC conducts exams for prestigious government posts like the IAS, IFS, IPS, IRS, IAAS, IRTS, and ITS, offering competitive salaries, extensive perks including accommodation, official vehicles, and medical benefits, along with significant roles and responsibilities. IAS officers handle administrative affairs, while IFS officers represent India internationally. IPS officers enforce law and order, IRS officers manage tax collection, IAAS officers ensure financial accountability, IRTS officers oversee railway traffic, and ITS officers promote international trade, each contributing to governance and development at various levels of the Indian government and society.