To implement Single Sign-On (SSO) with WorkOS, Okta, and Node, you need to follow a step-by-step tutorial that covers the necessary steps for adding SSO to your app using SAML, Okta, Node, and WorkOS. The process involves installing the WorkOS Node SDK, setting secrets, configuring the Okta connection, setting up the frontend, setting up the backend, testing the connection, and handling user sessions. You can use AuthKit or build your own login box depending on your choice. After completing these steps, you have set up an SSO connection and successfully integrated it in your app. The next steps include handling user sessions, implementing logout, adding social logins, implementing access control, provisioning users automatically, handling failed authentication events, and more. Additionally, there are various resources available to help you further, such as the Developer's Guide to SSO, User Management Quickstart, AuthKit Branding Docs, SSO Quickstart, Okta SAML Integration Guide, example applications, Admin Portal Docs, Migration Guides, Passkeys, and Managing SAML X.509 Certificates.