The metaphysics of Supreme Reality. from VEDA (knowledge) and ANTA (the end).
Vedanta is very old scripture. It was revived by Sage Vyasa and explained in his work called Vedanta Sutra, better known as Brahma Sutra. In the 6th Century AD, Adi Shankarayacharya wrote commentaries on the Brahma Sutra. Like the Sankhya Darshana, the Brahma Sutra also treats the Atma as a drashta (onlooker). As an onlooker or witness, it is not influenced by Ragas (attachment) or vikaras (change). its ultimate aim is also liberation from worldly bonds. It treats nature as an illusion and therefore false.
Vedanta philosophy is drawn from Vedas and the Upanishads. It is converned only with spirituality. It teaches that God is in everyone and everything. Spiritual truths cannot be learned from lectures, they must be experienced. Hence, Vedanta Philosophy is the foundation for the stophe, Religion means experience, e.g., no one can walk for another. Vedanta is designed to lead man to one science and one wisdom: that which sees oneself as real and all else as unreal. The essence of Vedanta may be found in the Bhagavad Gita, in the chapter where Lord Krishna teaches Arjuna at Kurukshetra.
All spiritual disciplines lead to the realisation of God if done with a pure heart (trikarana suddhi, purity of thought, word and deed) and are part of Vedanta Sadhana (that spiritual practice which leads unto God). But technically, it refers to the spiritual practices propounded by Adi Sankaracharya. I thas been further elaborated in the Brahma Sutra and the Sharirika Bhashya.  The principal teaching is that the Atma resides in the human body and is itself Almighty God or Paramatman.