🔹 Feature: Azure ExpressRoute Scalable Gateway (ErGwScale)
🔹 What It Does: ExpressRoute virtual network gateway SKU that scales up to 40 Gbps and autoscales between min/max scale units based on actual utilization.
What Is It Giving You:
✅ Up to 40 Gbps Per Gateway: 8M packets/sec, 280k connections/sec, 50k max VM connections, 4M flows.
✅ True Autoscaling: Set min and max scale units (each ~1 Gbps). The platform scales up and down between them — no manual SKU resize, no downtime.
✅ Fixed Scaling When You Need Predictability: Set min = max for deterministic capacity — useful for Private Link traffic or regulated workloads.
✅ No-Downtime Upgrade from ErGw1Az / 2Az / 3Az: Direct upgrade via portal or PowerShell — gateway stays available during the up-to-2-hour upgrade.
✅ Migration Tool for Legacy SKUs: Standard, High Performance, and Ultra Performance migrate via the official ExpressRoute gateway migration tool.
✅ Cap the Max for Cost Control: One knob (max scale unit) caps your worst-case bill — elasticity without surprise invoices.
For hybrid enterprises, banks, and heavy on-prem-to-Azure data flows — this is the gateway SKU you’ve been waiting for. 🚀
🌐 https://learn.microsoft.com/en-us/azure/expressroute/scalable-gateway
