This guide outlines the capabilities industrial organizations should demand from SD-WAN. The solution must support OT-specific protocols without requiring multiple disconnected products. Flexible management should operate from enterprise systems, the cloud, or the local device, including during connectivity loss. Zero-touch deployment allows remote equipment to be installed and configured without onsite security specialists. Self-healing WAN capabilities should detect degraded links and automatically restore application performance, while intelligent steering routes traffic according to latency, jitter, bandwidth, and service-level requirements. Security must be built into the platform through firewalls, VPNs, encryption, intrusion prevention, antivirus, sandboxing, and protection against

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