Which security is better Auth0 or OAuth2

Question

I need to secure application with any of the one security.

Answer 1

I will suggest Auth0. I have written few lines about both of them so, you can chose it yourself.....................if needed more details message me.
Oauth2 is a protocol that allows a user to grant limited access to their resources on one site, to another site, without having to expose their credentials.
Auth0 is an organisation, who manages Universal Identity Platform for web, mobile and IoT can handle any of them — B2C, B2B, B2E, or a combination.