Hi! I wonder if it's possible to use different state backends with a runtime argument? Currently the only option I saw is to login to the backend and then every action is done against this backend

You can also set it in the Pulumi.yaml

Thank you! Is it possible to set it in the stack configuration as well? Different stacks in the same project use different backends?

Not at the moment, but feel free to raise a request at gtihub.com/pulumi/pulumi for that