In authentication, a user or application proves they are who they say they are by providing valid credentials. The most common verification is password, often combined with other methods, such as a fingerprint.

Auth0 simplifies the use of open industry standards like OAuth 2.0, OIDC, and SAML to authenticate. Users can log into your applications with social media credentials, corporate accounts, and a broad range of other credentials.

So , we have 2 ways.

1) Add Login

2)Provision Users

Add Login
Here we have 3 options.

• Login

• Single Sign on

• Passwordless

Provision Users
Here we have:

• Identity Providers

• Database connections

• Enterprise connections

• Protocols

• Connection setting best practices

For detailed information, kindly follow this official documentation