advanced~2h

OAuth2 & OpenID Connect Deep Dive

"Login with Google" looks like one button but hides a specific, standardized protocol with four distinct actors. This chapter is OAuth2 and OpenID Connect, precisely.

Learning objectives

  • Beginner: Name the four actors in OAuth2 and what each one's role is.
  • Intermediate: Implement the Authorization Code Grant with PKCE for a web application.
  • Advanced: Choose the correct grant type (Authorization Code, Client Credentials, etc.) for a given integration scenario, and explain how a resource server validates the resulting token.

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OAuth2 & OpenID Connect Deep Dive

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