Enterprise Integrated Windows Authentication (IWA) over Kerberos provides a single sign-on experience for the REST API client application that runs on Windows. The Windows PC credentials of a user are used to generate a Kerberos token. Presence Services uses this token in the authentication process.

To use this authentication type, the administrator must generate a Kerberos keytab file and upload it to Presence Services.

The keytab file enables Presence Services to authenticate against the Kerberos KDC.

For more information about generating the keytab file, see Generating the keytab file.