Relying solely on predefined probes to verify the Layer 3 service status of
            circuits can limit the flexibility and accuracy of path selection. To provide more
            granular control and leverage existing performance monitoring, Prisma SD-WAN now
            supports configurable service health probes to determine the 
Layer 3 service status of a circuit. This
            feature allows you to optionally use application and link performance probes to verify
            the Layer 3 service status of a circuit, providing a unified and consistent approach to
            path health verification.