The cortical actomyosin network generates the mechanical force that drives highly dynamic processes occurring during epithelial morphogenesis, such as cell division, cell rearrangements or cell shape changes. Proper apical-basal and planar cell polarity are required to regulate the spatiotemporal behavior of the actomyosin network during morphogenesis. In Drosophila, Bazooka/Par3 (Baz) is one of the key regulators controling both apical-basal and planar cell polarity