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Azure Front Door Standard - URL rewrite where is the syntax for rule source pattern and destination pattern documented?

Lars Schnell 20 Reputation points
2025-09-10T14:11:25.98+00:00

Azure: Azure Front Door (Standard)

I can't figure out what are the syntax and pattern at the ruleset for URL rewrite for Source Pattern and Desitnation Pattern.

Is it id.sample.com/8003/12121212 need to URL-rewrite within the action definition to
Currtently we tried Source pattern: /8003/* or /8003/(.*) to Destination pattern: /?view=sample&id=$1 or /?view=sample&id={request.path[2]}
But not got the URL rewrite working but not passing the parmeters proper.
I could not found any proper documentation which give me proper syntax documentation for source and destination pattern.

Any helping hand would be appreciated.

Regards Lars.

Azure Front Door
Azure Front Door

An Azure service that provides a cloud content delivery network with threat protection.

Answer accepted by question author

Ganesh Patapati 11,915 Reputation points Microsoft External Staff Moderator
2025-09-10T14:49:16.5466667+00:00

Hello Lars Schnell

You mentioned that if your path starts with a special character like "?", it may not work as expected, which is the expected behavior at the Front Door level.

If your path does not start with a special character, the segment values may change automatically for that request. If you want to create a rewrite rule, please refer to the documentation below.

Refer: https://learn.microsoft.com/en-us/answers/questions/2245287/azure-front-door-url-rewrite-rule-configuration-as

Refer: URL rewrite

As this something which is not supported. We encourage customers to create a feedback item for this request on the feedback forum

Feedback Link : Azure Networking Feedback Forum · Community

I hope this was helpful!

If the above is unclear or you are unsure about something, please add a comment below.

Kindly let us know if the above helps or you need further assistance on this issue.

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