az policy --help Manage resource policies.

[addaxnasom]

Group
    az policy : Manage resource policies.

Subgroups:
    assignment            : Manage resource policy assignments.
    definition            : Manage resource policy definitions.
    event       [Preview] : Manage policy events.
    remediation [Preview] : Manage resource policy remediations.
    set-definition        : Manage resource policy set definitions.
    state       [Preview] : Manage policy compliance states.