Azure Front Door Rule Regex

Question

I am trying to create a rule in Azure Front Door to match the first folder in the request path and then use that to set a request header to the back-end origin group.

https://myfd.azurefd.net/**config**/some1/some2/some3/test.html https://myfd.azurefd.net/**identity**/some1/some2/some3/

I was able to do this in Application Gateway and get it to work as follows:

App Gateway Config

However, I cannot get this to work in FD as per the following config:

Azure Front Door Config

Answer 1

Azure Front Door is offering 3 tiers of services; the feature and optimization " Regular expression in the rules engine " is not available in the Classic tier . It was the root of the problem here. Consider the Standard or Premium tiers. Please see the screenshot below.

Step1: Front Door created with Premium tier

Step2: Created a rule engine with Regular expression

hope this helps!