How does The Great Theatre of the World use the idea that life is like a stage?

In the context of Spanish literature, Pedro Calderón de la Barca utilizes the metaphor that "all the world is a stage" in his auto sacramental titled The Great Theatre of the World (c. 1635).12

He employs this concept through a strict hierarchical framework, positing that every human being is assigned a specific role to perform before God. By framing life as a theatrical performance, Calderón emphasizes that individuals must fulfill their divinely ordained duties within the social and moral order. This allegorical approach reflects the broader Baroque tendency to use the stage to explore profound theological and moral themes, reinforcing the idea that earthly existence is a temporary performance where one's actions are observed by a higher power.12