What is the difference between OAuth 2.0 and Auth0? Which one should I use to develop the authentication system?
Auth0 uses the OpenID Connect (OIDC) Protocol and OAuth 2.0 Authorization Framework to authenticate users and get their authorization to access protected resources.
Primarily, SAML 2.0 is designed to authenticate a user, so providing user identity data to a service. OAuth 2.0 is designed as an authorization protocol permitting a user to share access to specific resources with a service provider.
Auth0 implements proven, common and popular identity protocols, both for consumer oriented web products (OAuth 2.0, OAuth 1.0, OpenID) and for enterprise deployments (SAML, WS-Federation, LDAP). You have complete freedom to use the one that best meets your business needs.
OAuth 2.0 is an authorization protocol and NOT an authentication protocol. As such, it is designed primarily as a means of granting access to a set of resources, for example, remote APIs or user's data.
OAuth 2.0 is a standardized authorization protocol, Auth0 is a company that sells an identity management platform with authentication and authorization services that implements the OAuth2 protocol (among others).
OAuth 2.0 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.
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