Which policy should be configured to redirect traffic from the private network to an ISP network?

A data policy is used to manipulate data plane traffic, including redirecting traffic. In this scenario, redirecting traffic from a private network to an ISP network involves modifying the forwarding behavior of data packets, which is precisely what a data policy accomplishes. Control policies manage the control plane, affecting routing information and network topology, not direct traffic forwarding. Security policies focus on access control and threat prevention. Application-aware policies prioritize or steer traffic based on application identification, but a general redirection to an ISP is a broader data plane function.