13. Authentication and User Management
Reference for how authentication, users, tenants, and per-tenant configuration work in sv0-platform. For the operational end-to-end flow, see [Authentication, end-to-end](../runbooks/authentication-end-to-end.md).
ADR-016: Multi-Tenant Authentication Architecture
Adopt a B2B multi-tenant authentication architecture with an external identity provider as source of truth, URL-scoped tenants, SecurityV0 as its own organization, and cross-tenant super-admins via internal-org membership.