Hello Gongya Yu,
Thanks for reaching out in the Microsoft Q&A!
The "VPN Type" setting in Azure VPN Gateway has not been retired but has been integrated into the gateway SKU selection. Policy-based gateways are available under the Basic SKU and support only IKEv1, while route-based gateways, available under all other SKUs, support both IKEv1 and IKEv2 (with IKEv2 recommended for better security). If you no longer see the "VPN Type" option, it means your VPN Gateway is configured as route-based by default. For legacy devices requiring IKEv1, you can configure a route-based gateway to use IKEv1, but upgrading to IKEv2 is advisable for enhanced security. For more details, refer to the Azure VPN Gateway FAQ here and specifics on IKEv1 and IKEv2 here.
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