Azure Networking - Cost Drivers

Ingress is not charged

egress is charged

anything originating the Azure subscription and exiting the Azure backplane is charged.

e.g: uploading 10GB of data to Azure storage, you are not charged.

e.g.: Downloading 10GB of data to Azure storage, you are charged.

VNET peering costs

connecting vnets without having to implement vent-vnet vpn

works within the same azure region as well as cross regions

both ingress and egress are charged

VPN

If you are connecting vnets using vpn or on-prem using vpn then pricing depends on gateway sku

Express Route

Pricing

Amount of bandwidth

Plan you sign up for

Region

metered

unmetered

inbound not charged,
all outbound data is charged

Inbound not charged,
outbound data is not charged

Demystifying network and traffic chages

Free

Paas offering - service to service in the same region - Free

same vnet - Free

Charged

Cross region - Service to Service

Outbound is charged, inbound is not charged

VMs - Outbound to Internet from Azure

Incoming traffic to Azure VMs from Internet

VPN between 2 vnets in the same region

Charges for the VPN resources

Traffic between vnets with vpn

VNET-VNET vpn across regions

Charges for the VPN resources+egress charges

Express route - Egress charged unless its unmetered, ingress not charged

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Vnet peering same region or global both ingress and egress charged