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Small and medium business | Business Central, N...
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Best Azure Service for Public Static Endpoint Without Authentication

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We have a requirement where an external party (like Amazon) needs to push data to our endpoint without any authentication. Currently, we are using Power Automate, but it enforces OAuth authentication, which doesn’t fit this scenario. We need a static public URL (for example: https://{appname}.azurewebsite.net/PunchoutInvReciver or https://{appname}.azurewebsites.net/api/ProcessInvcXMLRequest) that external systems can post data to directly. Since the azurewebsites.net domain represents Azure App Services, which include Web Apps, Azure Functions, and Logic Apps (Standard), I’d like to know which of these services is best suited for this use case, considering the need for a public static endpoint without authentication, low cost, and ease of deployment and maintenance. Some of Amazon’s customers are already using similar URLs (as shown in the demo examples provided by Amazon), but it’s unclear which specific Azure service is being used to host those endpoints.
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    Jainam M. Kothari Profile Picture
    13,586 Super User 2025 Season 2 on at
    Best Azure Service for Public Static Endpoint Without Authentication
    Hello,
     
    For a public static endpoint without authentication, Azure Functions with an HTTP trigger set to AuthorizationLevel.Anonymous is the best option because it provides a simple, low-cost, and scalable solution with a static URL like https://{appname}.azurewebsites.net/api/{functionName}.
     
    Compared to App Service or Logic Apps, Functions are easier to deploy and maintain for lightweight scenarios like receiving Amazon’s XML payloads.

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