a brief review on Oauth2

 

1. Common Oauth2 flow:

see: https://auth0.com/docs/get-started/authentication-and-authorization-flow/authorization-code-flow

 

2.  PKCE for App:

see: https://auth0.com/docs/get-started/authentication-and-authorization-flow/authorization-code-flow-with-proof-key-for-code-exchange-pkce