Not that hard, when you run their quickstart (one docker-compose command) you get a self service node.js based app which uses Kratos client to offer authenticat

Not that hard, when you run their quickstart (one docker-compose command) you get a self service node.js based app which uses Kratos client to offer authentication, registration, email reset, user data management, authentication with third parties. All of this backed up on a postgres / mysql / sqlite db and running on a (go) binary. MFA is in progress, other than that, I think it's a solid offering (and I'm using it for a product). Integrating with oathkeeper (tokens) or keto (permission control) is quite simple as well.