Developed new Azure CLI commands in the Azure/azure-cli repository to enhance ExpressRoute link failover testing and improve resiliency visibility for Virtual WAN ExpressRoute gateways. Focused on enabling operators to test, monitor, and validate network resilience more efficiently, the work introduced CLI-based tooling that reduces mean time to recovery and strengthens incident response. Leveraged Python for CLI and API development, collaborating across teams through co-authored pull requests. The technical approach centered on expanding operational testing capabilities and surfacing resiliency information, directly addressing network reliability challenges and providing customers with greater confidence in their infrastructure’s robustness and recoverability through improved automation.