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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 15,732 Super User 2026 Season 1 on at

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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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Rishabh Kanaskar 6,219 Super User 2026 Season 1 on at

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Hi,

Use Azure Functions with an HTTP trigger set to Anonymous. It gives you a static public URL (https://{appname}.azurewebsites.net/api/{functionname}), no authentication, low cost (consumption plan), and easy deployment. Logic Apps and Power Automate enforce authentication, so they don’t fit your requirement.

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Rishabh

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OussamaSabbouh 12,803 Super User 2026 Season 1 on at

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Hello,

The easiest and cheapest way to expose a public, no-authentication endpoint for Amazon to POST data to is an Azure Function with an HTTP Trigger set to AuthorizationLevel.Anonymous.

It gives you a static URL like:

https://<appname>.azurewebsites.net/api/ProcessInvcXMLRequest

Azure Functions is lighter, cheaper, and simpler than Logic Apps or Web Apps for this use case.

Regards,

Oussama Sabbouh

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YUN ZHU 99,055 Super User 2026 Season 1 on at

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Hi, hope the following helps as well.

Use Azure Functions with Dynamics 365 Business Central

https://learn.microsoft.com/en-us/training/modules/use-azure-functions/?wt.mc_id=DX-MVP-5004336

Thanks.

ZHU

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Gerardo Rentería Ga... 25,555 Most Valuable Professional on at

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Hi, good day
I hope this can help you, and give you some hints.

Azure Function SQL Trigger: how to use it (and why it can be useful in your Business Central projects) – Stefano Demiliani

Building Robust Integrations with Business Central Using Azure's Integration Services - Fredborg

Best Regards
Gerardo

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