1. In Setup, enter Single Sign-On Settings in the QuickFind box, then select Single Sign-On Settings.
2. In SAML Single Sign-On Settings, select New.
3. On the SAML Single Sign-On Settings page, enter the required information and select Single Logout Enabled.
4. For Identity Provider Single Logout URL, enter the SAML SLO endpoint of the identity provider. This URL is the endpoint where Salesforce sends LogoutRequests (when a logout is initiated by Salesforce), or LogoutResponses (when a logout is initiated by the identity provider). The identity provider gives you thisendpoint.
5. Select the HTTP binding type to be used for service provider-initated SLO. The binding type determines where to put the LogoutRequest or LogoutResponse in the SAML request. The value is base64 encoded.HTTP Redirect — Sent in the querystring, deflated.HTTP POST — Sent in the POST body, not deflated.
6. Provide your IdP with the Salesforce SP SLO endpoint. It is the LogoutURL found under YourOrganization in Endpoints on the SAMLSingle Sign-On Settings page. The format for the endpoint is https://.my.salesforce.com/services/auth/sp/saml2/logout, where is your org’s My Domain name. If the org is a Salesforce Community, the Logout URL for the community appears on the same page.