Description: A policy document is a set of rules and permissions that defines how resources can be accessed and used in cloud computing environments. These documents are fundamental for managing security and access control, as they allow administrators to specify who can perform what actions on a given resource. In the context of cloud services, policy documents are used to establish detailed permissions that govern access to data and services. These documents can be written in JSON or YAML and are interpreted by the system to enforce the defined rules. Proper implementation of policy documents is crucial for ensuring security and compliance in the cloud, enabling organizations to protect their digital assets and adhere to data privacy and security regulations.