SD-WAN to IP-WAN SCADA interconnect architecture bridges modern software-defined WAN domains with legacy industrial control networks using a point-to-point transit link (10.254.10.0/30). SD-WAN users and mobile endpoints connect through a firewall-integrated edge device, which peers via BGP policy control with a Cisco router serving the SCADA network (10.16.14.0/24) and its critical servers. This hybrid topology enables secure, policy-driven access from enterprise users to SCADA infrastructure while maintaining network segmentation and controlled routing. Fork this diagram on Diagrams.so to customize subnets, add redundant links, or integrate additional WAN providers. The design demonstrates best practices for converging agile SD-WAN deployments with deterministic IP-WAN requirements in industrial environments.