Vajrayana (diamond or thunderbolt vehicle) is one of three main traditions of buddhism. All three share the ultimate goal of attaining enlightenment.
Vajrayana views that the mind already has the fruition or resultant conditions of enlightenment but obscured by ignorance and other defilements. The path or method of Vajrayana is to identify with fruition mind and practice towards the cause of enlightenment.
Its practices include empowerments, mantras, mudras, mandalas and visualizations of deities and buddhas.