Slack Single Sign-On Integration
The Slack Single Sign-on (SSO) Integration lets you create a client application that uses Auth0 for authentication and provides SSO capabilities. Your users log in to Slack with Auth0 identity providers, which means they perform the identity credentials verification.
For more information, check out Slack's article on enabling SAML-based Single Sign-on (SSO).
Create an SSO integration
To create a new Slack SSO Integration:
Navigate to Dashboard > SSO Integrations.
Click + Create SSO Integration.
Select Slack from the list of providers.
Give your new SSO integration a Name, enter your Slack Team Name, and set if Auth0 should handle SSO instead of Slack.
Next you'll be brought to the Tutorial tab. This has instructions on completing the integration with Slack so that it works with Auth0 for authentication.
Complete the configuration instructions in the tutorial, then choose connections on the Connections tab to use with your new Slack SSO integration, allowing users in those connections to log in to Slack.
Once you've followed the configuration instructions in the tutorial, modified your settings (if necessary), and enabled your connection(s), you're done with setting up an SSO integration between Slack and Auth0.