The Prime Minister of India is the Head of the Union Government, as distinct from the President of India, who is the Head of State. Since India has parliamentary system of constitutional democracy, it is the Prime Minister who oversees the day-to-day functioning of the Union Government of India.
The Prime Minister of India is the leader of the federal government, unlike the President of India who serves as the head of state. Given that India follows a parliamentary system with a constitutional democracy, it is the Prime Minister who manages the day-to-day operations of the Union Government.