Advaita vedanta is a hindu philosophy. Advaita is the universe and every thing else is based on or having the nature of an illusion. Advaita Vedanta is closely compared to yoga of knowledge. People also sometimes abbreviate the name to "Advaita" or "Vedanta." in Advaita,only the innermost part of you is aware or having awareness of surroundings and sensations and thoughts.the idea is that fundamental of the upanishads on which Advaita is based. Advaita Vedanta is important because by understanding it, you may be able to come closer to self-realization.According to Advaita, if you are aware of something, it isn't really you. Advanita is not met for religious propaganda. Advaita is a serious attempt at exploring philosophers themselves. SankarAcArya is the most important teacher of the Advaita. SankarAcArya is a pre-eminent teacher who continued the upanishadic tradition. The name SankarAcArya has become a title for the heads of the numerous Advaita institutions in India today.
Shankaracharya