What distinguishes built-in roles in Azure RBAC from custom roles?
Built-in roles enable just-in-time access, whereas custom roles provide permanent access to Azure resources.
Built-in roles are predefined by Azure and cannot be modified, while custom roles allow for the specification of a unique set of permissions.
Built-in roles define the geographic scope of access, whereas custom roles are used to restrict access to specific resource types regardless of location.
Custom roles can only be applied to resource groups, while built-in roles are applicable at all levels of the Azure hierarchy.