Which REST API resource is used for real‑time monitoring of application‑aware routing?

The correct answer is SLA class. In Cisco SD-WAN, Application-Aware Routing (AAR) policies are configured using Service Level Agreement (SLA) classes. These classes define the performance thresholds (e.g., latency, jitter, packet loss) that traffic must meet. Therefore, to monitor the real-time performance of AAR, you would query the SLA class resource to see if applications are meeting their defined SLAs. The other options are incorrect because: history typically refers to historical data or logs, not real-time monitoring of AAR. event refers to specific occurrences within the system, not the continuous monitoring of routing performance. alarm refers to notifications triggered when a threshold is breached, which is a result of monitoring, not the monitoring resource itself.