Yes. Google Apps will work as Service Provide ( SP ) and we need to "introduce" Gluu Server with Google Apps as Gluu Server can work as Identity Provider ( IDP ). We need to configure both parties ( Google Apps and Gluu Server ) as they can talk to each other. **From Google Apps ( through it's dashboard ):** * Login to dashboard.* "Security" tab.* "Advanced Settings" * "Set up Single Sign On (SSO)" * Sign-in Page URL: https://<hostname>/idp/profile/SAML2/Redirect/SSO * Sign-out Page URL: https://<hostname>/idp/logout.jsp * Change Password URL: Your organization password reset link if there is any. * Verification certificate: Upload IdP's self signed certificate * Ref: [IDP Certificates](https://support.gluu.org/view/installation/certificates-in-idp/275) * Use a domain specific issuer: Enable it. **From Gluu Server:** * Add new Trust Relationship * Ref: [Trust Relationship](http://www.gluu.org/docs/admin-guide/saml/outbound-saml/#saml-trust-relationship) * Use “File” Method to create this Trust Relationship. Upload GoogleMetadata.xml. * Release “googleID” NameID attribute * Configure specific relying party: “SAML2SSO” configuration. * IncludeAttributeStatement: Enabled * assertionLifeTime: Default * assertionProxyCount: Default * signResponses: Conditional * signAssertions: Never * signRequest: Conditional * encryptAssertions: Never * encryptNameIDs: Never