# Authentication

Outline can be configured to accept a variety of SSO, OIDC, and SAML authentication options depending on the edition in use. Note that Outline does not support email + password authentication natively.

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**Documents**

- [License restrictions](https://docs.getoutline.com/s/hosting/doc/license-restrictions-f9aq6uEL3H)
- [Requirements](https://docs.getoutline.com/s/hosting/doc/requirements-ULdYnwi4wG)
- [Installation methods](https://docs.getoutline.com/s/hosting/doc/installation-methods-pSvgz9j0QC)
- [Configuration](https://docs.getoutline.com/s/hosting/doc/configuration-509J4lAzjo)
- [Business + Enterprise](https://docs.getoutline.com/s/hosting/doc/business-enterprise-rv0715NxO3)
- [Backups](https://docs.getoutline.com/s/hosting/doc/backups-KZtPOADCHG)
- [Troubleshooting](https://docs.getoutline.com/s/hosting/doc/troubleshooting-HXckrzCqDJ)