Last updated: 2020-04-16

Source: https://support.freshdesk.com/support/solutions/articles/230311-how-does-sso-in-freshdesk-work-

The Single Sign-On capability in Freshdesk lets the users arriving at your support portal login with their credentials saved on your database.

This saves them the time and effort involved in creating a separate account for your support portal. You can also set up an SSO mechanism to validate users trying to log into your portal for Freshdesk using a locally hosted script. These could be the users who already have an account in your web application or whose information you have stored in your internal application like ActiveDirectory.