acess_token Archives - Igor Venturelli

OAuth2 for System-to-System Authentication: A Deep Dive into the Client Credentials Flow

Learn about OAuth2 Client Credentials Flow: system-to-system authentication

OAuth2 is the de facto standard for securing APIs and authorizing system-to-system communication. With its wide adoption, you’ve probably encountered it at some point, whether in the context of securing REST APIs, enabling third-party integrations, or simply authenticating users. However, OAuth2 isn’t just a one-size-fits-all protocol; it offers different flows, each tailored to specific use cases. Today, we will focus on one such flow that is often underappreciated but incredibly powerful: the Client Credentials Flow.

Understanding the Differences Between OAuth2 and OpenID Connect (OIDC)

OAuth2 authorizes access and OIDC authenticates users. Learn their key differences and use cases

In the world of modern application security, OAuth2 and OpenID Connect (OIDC) play critical roles in authentication and authorization. While the two protocols often work hand-in-hand, they serve distinct purposes. Misunderstanding their differences can lead to implementation pitfalls, so let’s break it down in a straightforward way.