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OAuth2 & OpenID Connect Deep Dive · Lesson

Client Credentials Flow

Learn how this flow enables machine-to-machine authentication where a client acts on its own behalf, not a user's.

Client Credentials: Intro

Welcome to the Client Credentials Flow lesson! This flow is a special type of OAuth2 grant designed for machine-to-machine authentication.

Unlike other flows that involve a user, here, an application (the 'client') acts entirely on its own behalf.

When Apps Talk to Apps

Imagine you have a backend service that needs to access an API to update data, or a scheduled job that fetches reports from another system.

In these scenarios, there's no end-user present to log in or grant consent. The application itself needs to prove its identity and authorize its own access.

All lessons in this course

  1. Authorization Code Flow
  2. Client Credentials Flow
  3. Implicit Flow & Deprecation
  4. Device Authorization Grant
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