SSO (Single Sign-On) allows a user to log in to a tool with applications they use every day. For example, on Signitic, you can log in with Google or Office 365.
This process uses the third-party application's security system and allows the use of enhanced security measures like two-factor authentication (2FA).
Go to security settings

You can enable the option in the security settings of your account.
When it is active, it will force your administrators to use the SSO login of your email tool to log in to Signitic and the email + password login will be disabled.
This will therefore increase the security of your Signitic accounts and your data.