The primary domain of Zeus in Greek mythology is the sky and thunder. As the king of the gods, he wields power over weather and is regarded as the ruler of Mount Olympus. Zeus embodies authority, justice, and law, serving as a symbol of order in the cosmos. He plays a crucial role in various myths, often intervening in human affairs and influencing destiny. His character reflects cultural values of leadership and moral responsibility, underscoring the significance of divine governance in maintaining balance in the world.