# WS-Fed

> WS-Federation (Web Services Federation) is an Identity Federation specification
> 
> WS-Federation defines mechanisms for allowing different security realms to broker information on identities, identity attributes and authentication. WS-Federation focuses on federated identity and trusting authentication tokens across different realms, privileged password management is concerned with the security, control, and audit of high-risk account passwords within an IT environment

<p class="callout warning">WS-Fed will only be used with **Exchange** and a few other applications.</p>

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*[https://en.wikipedia.org/wiki/WS-Federation](https://en.wikipedia.org/wiki/WS-Federation)*