See the Explanation below for step by step instructions.
Explanation:
To provide a single host name that routes traffic based on the origin, you can use Azure Traffic Manager. This service allows you to route traffic to different endpoints based on various routing methods, including geographic routing.
* Navigate to the Azure Portal.
* Search for "Traffic Manager profiles" and select it.
* Click on "Create".
* Enter the following details:
* Name: Enter a name for the Traffic Manager profile (e.g., ContosoTrafficManager).
* Routing method: Select Geographic.
* Subscription: Select your subscription.
* Resource group: Select an existing resource group or create a new one.
* Resource group location: Choose a location (this does not affect the routing).
* Click on "Create".
* Navigate to the newly created Traffic Manager profile.
* Select "Endpoints" from the left-hand menu.
* Click on "Add" to add a new endpoint.
* Enter the following details:
* Type: Select External endpoint.
* Name: Enter a name for the endpoint (e.g., NewYorkEndpoint).
* FQDN: Enter ny.contoso.com.
* Geographic region: Select "World" (this will be adjusted later).
* Click on "Add" to save the endpoint.
* Repeat the process to add the second endpoint:
* Type: Select External endpoint.
* Name: Enter a name for the endpoint (e.g., GermanyEndpoint).
* FQDN: Enter de.contoso.com.
* Geographic region: Select Europe.
* Navigate to the Traffic Manager profile.
* Select "Configuration" from the left-hand menu.
* Under "Geographic routing", adjust the regions:
* For the GermanyEndpoint, ensure that the geographic region is set to Europe.
* For the NewYorkEndpoint, ensure that the geographic region is set to World (excluding Europe).
* Use a DNS query tool to test the routing.
* From a location in Germany, query the Traffic Manager profile's DNS name and ensure it resolves to de.contoso.com.
* From a location outside Europe, query the Traffic Manager profile's DNS name and ensure it resolves to ny.contoso.com.
* Azure Traffic Manager: This service uses DNS to direct client requests to the most appropriate endpoint based on the routing method you choose. Geographic routing ensures that traffic is directed based on the origin of the request.
* Geographic Routing: This method allows you to route traffic based on the geographic location of the DNS query origin, ensuring that users are directed to the nearest or most appropriate endpoint.
Step-by-Step SolutionStep 1: Create a Traffic Manager ProfileStep 2: Configure EndpointsStep 3: Adjust Geographic RoutingStep 4: Test the ConfigurationExplanationBy following these steps, you can provide a single host name that routes traffic to de.contoso.com for users in Germany and to ny.contoso.com for users from other locations, ensuring efficient and appropriate traffic management.

Reference:
https://docs.microsoft.com/en-us/azure/frontdoor/front-door-custom-domain-https

Reference:
https://docs.microsoft.com/en-us/azure/vpn-gateway/point-to-site-about

Explanation: