Cell polarity is the intrinsic asymmetry in the structure, function, and organization of a cell's components, often along one or more axes. As a fundamental concept in cellular and developmental biology, it encompasses the study of the molecular mechanisms and regulatory networks that establish, maintain, and remodel this asymmetry, investigating how it governs essential cellular processes such as migration, division, differentiation, and tissue morphogenesis, and underscoring its critical significance for development, physiology, and disease pathogenesis.