@sato-m ,
Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I am afraid I do not understand your requirement. Can you be more specific?
What exactly do you mean by "connect different subscriptions"
- AFD will always belong to the subscription in which it was created.
- You can add any site behind an AFD as long as the site is publicly accessible.
- Now this site can belong to any subscription.
- If it belongs to a different subscription rather than the one in which AFD is created, you have to use the "Custom host" as Origin type.
- Front Door supports autodiscovery of your application backends from App Service, Cloud Service, or Storage provided they are in the same subscription.
Thanks,
Kapil
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