Azure.Identity is the go-to way to authenticate azure resources from your dot net project. Almost all azure resources can be connected with by passing the credential class to the appropriatie configuration method. This makes is very simple to develop both locally where the developer has acces to an azure resource by IAM role assignments, and in azure where the resource's managed identity has these rights.

However with this package, I see no way to pass an new DefaultAzureCredential() object to any of the connect or config methods. Instead I'm required to pass an principalId, but I have no idea how to even access the principal id from code in my azure function (except by passing it in as an app configuration from my bicep template). Beside, the entire point of the managed identity is to let azure figure out how to authenticate and not bother my code with it.