Amitabha is the most commonly used name for the Buddha of Infinite Light and Infinite Life. A transhistorical Buddha venerated by all Mahayana schools （T'ien T'ai， Esoteric， Zen ...） and， particularly， Pure Land. Presides over the Western Pure Land （Land of Ultimate Bliss）， where anyone can be reborn through utterly sincere recitation of His name， particularly at the time of death.
Amitabha Buddha at the highest or noumenon level represents the True Mind， the Self-Nature common to the Buddhas and sentient beings -- all-encompassing and all-inclusive. This deeper understanding provides the rationale for the harmonization of Zen and Pure Land， two of the most popular schools of Mahayana Buddhism. See also "Buddha Reatation，" "Mind，" "Pure Land."