In the old days, we'd call this the "app" and the "management" (or "admin", or "provisioning") interface. The app is the application(s) providing the actual se

In the old days, we'd call this the "app" and the "management" (or "admin", or "provisioning") interface. The app is the application(s) providing the actual service your SaaS offers, the management interface manages/configures the app, handles migrations, updates, etc. Example: Maybe your app needs a separate DB per tenant. Your management thing handles spinning that up, etc.