As an example in identity space, Auth0 has such amazing documentation, especially their simple and dynamic code examples which reflect your login/tenant. Recen

As an example in identity space, Auth0 has such amazing documentation, especially their simple and dynamic code examples which reflect your login/tenant. Recently, I started evaluating Microsoft Azure AD B2C for this purpose and it's just such a nightmare! Their only configuration options are email/sms for 2FA despite the fact they use their own auth app for their own products (such as logging into Azure Portal!). I had evaluated Azure AD 5 years ago and it's still a nightmare from documentation standpoint. You have to hunt down code examples on stack overflow or some github samples that their developers have provided.