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Site-to-Site VPN connection over ExpressRoute private peering - egress traffic costs?

Cat Mucius 71 Reputation points
2024-12-18T08:50:48.1633333+00:00

Here's a question I can't find answer to anywhere in documentation:

Let's say I use either of these options:

How will price for egress traffic be calculated? Will I be charged twice - once for VPN Outbound Inter-virtual? Data Transfer and once for ExpressRoute Outbound Data Transfer? Or just for one of them? For which then?

Azure VPN Gateway
Azure VPN Gateway
An Azure service that enables the connection of on-premises networks to Azure through site-to-site virtual private networks.
1,593 questions
Azure ExpressRoute
Azure ExpressRoute
An Azure service that provides private connections between Azure datacenters and infrastructure, either on premises or in a colocation environment.
399 questions

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  1. Silvia Wibowo 4,261 Reputation points Microsoft Employee
    2024-12-26T23:14:42.6933333+00:00

    Hi @Cat Mucius , I understand you're seeking clarity on the data transfer charges for VPN site-to-site over Express Route private peering or Microsoft peering.

    Referring to these pages:

    Outbound data transfer for your use case will apply on Express Route circuit. VPN only charges data going out of Azure data centers between two virtual networks in different regions. Other data transfers over the VPN connections to your on-premises sites or the internet in general are charged separately at the regular data transfer rate (if over Internet) or Express Route outbound Data transfer pricing (if over Express Route circuit).

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