Barueri is a Brazilian city in the state of Sao Paulo located in the northwestern part of the Greater Sao Paulo metropolitan area. Azul Brazilian Airlines has its headquarters in Barueri. In addition, Walmart Brasil has its headquarters in Barueri. Its boundaries are Santana de Parnaiba to the north, Osasco in the east, Carapicuiba in the Southeast, Jandira to the south and southwest and Itapevi the west. The city is served by the trains of line B of the Companhia Paulista de Trens Metropolitanos (literally Sao Paulo Metropolitan Railway Company), (CPTM).