> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stackone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

> Set up Single Sign-On with an identity provider, or use passwords with multi-factor authentication.

StackOne can be set up to let users sign in with Single Sign-On or with a password and MFA.

<CardGroup cols={2}>
  <Card title="Single Sign-On" icon="key" href="/secure/identity-and-access/authentication/sso/overview">
    Connect the SAML identity provider and verify the domain so users sign in through the IdP.
  </Card>

  <Card title="Passwords and MFA" icon="lock" href="/secure/identity-and-access/authentication/passwords-and-mfa">
    Change your password, turn on MFA, and require MFA for the whole organization.
  </Card>
</CardGroup>


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