Role

Role in Kubernetes is used to define the set of permissions granted to users or service accounts within a specific namespace. It specifies which actions (such as create, read, update, or delete) can be performed on particular resources (such as pods, services, or deployments). Roles are fundamental in Kubernetes' role-based access control (RBAC) system, which helps ensure that only authorized users or processes can interact with the resources within a cluster. They are often used to enforce the principle of least privilege, granting users only the permissions necessary for their tasks.

Use Case of Role -

• Fine-grained Access Control
• Security Enforcement
• Compliance and Auditing
• Application Segmentation

More Details: https://kubernetes.io/docs/reference/access-authn-authz/rbac/