Firebase multi-tenancy with multiple users

Question

I'm looking at Firebase as a backend for an MVP multi-tenant app. The app will be fully white labelled for each tenant, with each tenant signing up it's own user base. There will definitely be crossovers where users can register for more than one tenant however and I can't seem to see if this is supported by Firebase? essentially I would need to allow a user to register using the same email address to any number of tenants, without necessarily being aware that the tenants are the same system.

Is there anything that supports this?

Answer 1

Multi-tenancy is now supported by Google Cloud Identity Platform. Based on your question, this seems to be what you are looking for. See docs: https://cloud.google.com/identity-platform/docs/multi-tenancy-quickstart