We tried cognito (bizarrely hard to use), Auth0 (mildly hard to use), and Userfront (easy to use) for authentication + rbac + multi-tenancy. We also looked at W

We tried cognito (bizarrely hard to use), Auth0 (mildly hard to use), and Userfront (easy to use) for authentication + rbac + multi-tenancy. We also looked at Warrant and Oso, and my takeaway was that they shine for more complex use cases, which wasn't our particular need.