Does IWAN increase router CPU & memory load ?

Compared to the relative simplicity of SNMP monitoring metrics, IWAN features comes at an expense on the Network device in terms of memory (need for anticipation in configuring the cache size) and CPU (for advanced processing). Cisco has introduced EZPM in latest version of IWAN to decrease CPU load. Service providers have to check if the needed additional resources on routers is compliant with their existing portfolio (ie: Which router for which contracted bandwidth).