API security

Resource Server

A resource server is the API or protected service that receives and validates access tokens before serving data or actions.

Definition

A resource server is the protected component that exposes data, functions, or transactions to authorized callers. It relies on tokens and policy controls to decide whether a request is acceptable and what operations are allowed for the calling subject.

The Ariovis perspective

Tokens are part of an access architecture, not a substitute for identity governance or authorization. Their scope, lifetime, validation and revocation must match the risk of the API and user journey.

These concepts matter most inside a real project.

The first conversation helps establish your context, the systems involved and the next useful decision.