# Connect Node.js to Multiple SAML IdP **URL:** \ **Category:** Get Help\ **Tags:** nodejs, saml\ **Created:** [July 6, 2022, 1:14pm UTC](https://community.auth0.com/t/connect-node-js-to-multiple-saml-idp/86528 "2022-07-06T13:14:07Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ansnoussi](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/ansnoussi/32/38600_2.png) [@ansnoussi](https://community.auth0.com/u/ansnoussi)\ **Post date:** [July 6, 2022, 1:14pm UTC](https://community.auth0.com/t/connect-node-js-to-multiple-saml-idp/86528/1 "2022-07-06T13:14:07Z")
Hi Everyone, I have a simple MERN app that currently doesn’t use Auth0, but instead I’m using a basic jwt authentication. I want to make it possible for users to use SSO with an IdP that they specify. (make it possible for users to list my app as an SP). I see that this is possible with Auth0, but I’m completely lost on how ( or if possible ) to do this in a MERN stack setup. Any hints/example in this regard would be extremely helpful ! Thank you 🙏 ! ---
**Author:** ![marcelina.barycka](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/marcelina.barycka/32/56162_2.png) [@marcelina.barycka](https://community.auth0.com/u/marcelina.barycka)\ **Post date:** [May 20, 2024, 11:52am UTC](https://community.auth0.com/t/connect-node-js-to-multiple-saml-idp/86528/3 "2024-05-20T11:52:41Z")
Hi there, for any future members looking at this topic - to enable multiple SAML IdPs (enterprise connections) to a client application, we recommend using Home Realm Discovery to map the user’s entered email domain to a particular IdP. To make it work with Auth0-hosted New Universal Login, please take a look here: [Configure Identifier First Authentication](https://auth0.com/docs/authenticate/login/auth0-universal-login/identifier-first#define-home-realm-discovery-identity-providers). For integrating Auth0 with the MERN stack, we recommend following respective quick starts - [Auth0](https://auth0.com/docs/quickstarts). If the Home Real Discovery does not work for you (you can’t map user email with the IdP domain), we recommend using the Organizations feature so that an IdP/IdPs can be assigned on an Organization level. Take a look here: [Single Identity Provider Organizations](https://auth0.com/docs/get-started/architecture-scenarios/multiple-organization-architecture/single-identity-provider-organizations) and [Multiple Identity Provider Organizations](https://auth0.com/docs/get-started/architecture-scenarios/multiple-organization-architecture/multiple-idp-orgs). ---
**Author:** ![marcelina.barycka](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/marcelina.barycka/32/56162_2.png) [@marcelina.barycka](https://community.auth0.com/u/marcelina.barycka)\ **Post date:** [May 20, 2024, 11:52am UTC](https://community.auth0.com/t/connect-node-js-to-multiple-saml-idp/86528/4 "2024-05-20T11:52:51Z")