Pure Land Buddhism, also referred to as Amidism in English, is a broad branch of Mahayana Buddhism and one of the most widely practiced traditions of Buddhism in East Asia. Pure Land is a tradition of Buddhist teachings that are focused on the Buddha Amitābha.
The essential practice in Pure Land Buddhism is the chanting of the name of Amitabha Buddha with total concentration, trusting that one will be reborn in the Pure Land, a place where it is much easier for a being to work towards enlightenment.
“Namo Amitabha Buddha” (meaning homage to the Amitabha Buddha, and the name “Amitabha” means boundless light and infinite life), “Amitabha Buddha,” or simply, but with equal reverence, “Amitabha.”
Amitābha means "Infinite Light", and Amitāyus means "Infinite Life" so Amitābha is also called "The Buddha of Immeasurable Light and Life".