> For the complete documentation index, see [llms.txt](https://docs.peakcommerce.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.peakcommerce.com/product/using-peakcommerce/authentication-and-security.md).

# Authentication & Security

PeakCommerce secures every sign-in through **Auth0** as its identity provider, then governs what each signed-in person can see and do through roles and profiles. Authentication answers *who are you?*; [roles](/product/using-peakcommerce/users-and-user-roles/user-roles.md) and [profiles](/product/using-peakcommerce/profiles-and-permissions/user-profile-overview.md) answer *what are you allowed to do?* — keeping the two separate is what lets you adopt enterprise SSO without re-modelling permissions.

* **Sign-in** runs on Auth0 Universal Login — staff (Admins and CSRs) and customers alike. Social and enterprise SSO are supported.
* **Password and MFA policy** are enforced by Auth0, or by your own identity provider when you bring one.
* **End customers** can be signed into the customer portal automatically from your own app via SSO (operator-configured).
* **Administrative changes** are recorded in the audit log (**Settings → Audit Logs**).

Explore this section:

* [Single Sign-On for PeakCommerce Sites](/product/using-peakcommerce/authentication-and-security/single-sign-on-for-peakcommerce-sites.md)
* [Login Pages](/product/using-peakcommerce/authentication-and-security/types-of-login-pages-for-your-peakcommerce-account.md)
* [What Your Web Team Needs for SSO](/product/using-peakcommerce/authentication-and-security/what-will-our-web-team-need-to-do-over-and-above-the-sso-setup.md)
* [Session Management](/product/using-peakcommerce/authentication-and-security/session-management.md)
* [Password Policies](/product/using-peakcommerce/authentication-and-security/understanding-and-configuring-password-policies-in-peakcommerce.md)
* [Viewing Audit Logs](/product/using-peakcommerce/authentication-and-security/viewing-audit-logs.md)


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