This session offers an in-depth exploration of Cisco WAN Automation Engine (WAE) Design's traffic simulation and analysis capabilities. Attendees will learn how WAE Design simulates traffic flows across a network by modeling demands between source and destination endpoints, considering network topology, configuration, and state. Further, the session will delve into Simulation Analysis, which aggregates results from multiple failure scenarios to assess network vulnerability to congestion and latency. Key analyses such as worst-case traffic utilization, demand latency and failure impacts will be discussed.