BFF on an Azure Function App or on IdentityServer itself

[iChaosren]

Based on our architecture, we wanted to create a 'Broker' API that handles all the BFF work and use the ReverseProxy to forward all the requests to the main api and our other subsequent service APIs.

Azure Function Apps don't have access to AspNetCore routing. How, or even is it possible, to still use BFF on an Azure Function App?
If not, (and from what I've tested, it really isn't) could you add or do you plan on adding support for Azure Function Apps to BFF?

Alternative Solution:
Is it possible to use BFF on IdentityServer?
It already has cookie auth, which may conflict with BFF.
Would we be able to dynamic configure the BFF.Yarp -> ReverseProxy per request?
Then we would also configure all the auth redirects to the local IdentityServer/BFF endpoints.

[maartenba]

Azure Functions are not a supported hosting model for BFF indeed. BFF needs a full ASP.NET Core deployment model.
We would also recommend not co-hosting it with IdentityServer in the same application.