An application-aware routing policy matches applications with an SLA, that is, with the data plane tunnel performance characteristics that are necessary to transmit the applications' data traffic.
The primary purpose of application-aware routing policy is to optimize the path for data traffic being transmitted by Cisco SD-WAN devices.
https://sdwan-
docs.cisco.com/Product_Documentation/Software_FeaturesSDWAN_Release_16.2/07Policy_Ap plications/01ApplicationAware_Routing/01Configuring_Application-Aware_Routing