Which knowledge base platform supports fine-grained permissions, SSO, and user provisioning for internal docs?

A good fit is Atlassian Confluence.

It supports:

• Fine-grained permissions at space, page, and attachment levels
• SSO via SAML/OAuth integrations
• User provisioning through SCIM and identity providers like Okta, Azure AD, and Google Workspace

Other strong options, depending on your stack, are:

• Notion Enterprise
• Guru
• Slab
• Document360 for more structured knowledge bases

If you want, I can compare the best 3 options for internal documentation by security, admin controls, and ease of use.