Look at this painting by Diego Velazque. what is the main purpose?

Diego Velázquez's paintings often aimed to explore themes of reality, illusion, and the nature of art itself. In works like "Las Meninas," he invites viewers to question the relationship between the observer and the observed, blurring the lines between subject and spectator. The painting serves both as a royal portrait and a commentary on the act of painting, showcasing the complexity of perception and the artist's role in shaping it. Overall, Velázquez's purpose frequently revolves around provoking thought and reflection on the intricacies of life and artistry.