The Union Public Service Commission (UPSC) is India's premier central recruiting agency, responsible for appointments to All India services. The Civil Services Aptitude Test (CSAT), commonly known as the UPSC exam is conducted annually by the Union Public Service Commission (UPSC). The qualifying candidates can acquire jobs in Indian Administrative Service (IAS), Indian Police Service (IPS), Indian Foreign Service (IFS), etc. The exam has three phases: Preliminary (Prelims), Mains and Interview.