I have been researching for a long time and have found little to no information on this topic. Support has been unable to help me at all, and I was hoping to find an answer here.
My company uses Auth0 for our SSO platform and I was wondering if shopify had any support for a custom SSO integration. I imagine the user experience would not be so great if they had to make a new account just to buy something, instead of being able to login to their existing account. If this is not the correct place for this thread feel free to move it or ask me to.
There is multipass, but do note this is Shopify Plus only feature.
Multipass login is for store owners who have a separate website and a Shopify store. It redirects users from the website to the Shopify store and seamlessly logs them in with the same email address they used to sign up for the original website. If no account with that email address exists yet, one is created. There is no need to synchronize any customer databases.
I hope you are in the correct place for this discussion and help many Shopify partners too in future. Until now MultiPass login is for Shopify Plus store versions and if you are looking for a solution of SSO for Non-Plus users too here is the foremost option within easy reach.
miniOrange Provides Secure Single Sign-On (SSO) Access to your Shopify applications(both plus and Non plus Stores).Their SSO integration protocols includes SAML 2.0, OAuth, Open ID with supported IDPs like ADFS, Azure AD, Auth0, Okta, Onelogin, AWS Cognito, GSuite/Google Apps etc.
As you prefer Auth0 IdP for Single Sign-On (SSO) integration, you can prefer SAML 2.0 authentication, OAuth protocols.
They configured Single Sign-On (SSO) integration with AWS Cognito for my Shopify Non-Plus version as my users are stored in AWS Cognito with Supported SAML 2.0 authentication protocol in a cost beneficial manner. (Trial period of 90 days too)
In addition to these they have offered me security factors namely Two factor authentication and Risk based authentication to avoid fraud prevention with customizable login widget button.
You can check out this thread as well : https://community.shopify.com/c/Shopify-Discussion/Single-Sign-On-SSO-SAML-with-AWS-Cognito-Shopify-...