Enterprise tenancy architecture
Multi-Tenant SaaS Systems
SaaS collaboration that stays flexible as customers grow.
A foundation for organizations, teams and shared workspaces to collaborate without fragile permissions or data isolation.
The situation
The early product needs speed. Later it must support enterprise buyers, separated data, changing roles and audit questions without becoming a bespoke enterprise project.
The solution
We design tenancy, memberships, scopes, invitations, ownership and auditability as one coherent model.
What changed
- Organization and workspace isolation
- Granular roles, scopes and custom access models
- Least-privilege defaults with audit trails
- A flexible base for corporate, health and legal buyers
How it feels to use
People join the right workspace, share the right resources and understand what they can do.
What Certo takes on
Certo owns the permission model, data isolation, policy boundaries and operational evidence.
Evidence and boundaries
- Deterministic data isolation enforced at the database engine layer via PostgreSQL Row-Level Security (RLS), eliminating cross-tenant leakage independent of application logic.
- Unified hierarchical authorization (RBAC/ReBAC) across organizations, workspaces, and resources with audit-grade decision logging.
- Foundational architectural controls aligned with SOC 2 Type II, HIPAA, and GDPR/EU data sovereignty requirements prior to formal certification.
Verification harness & reference blueprint: supabase-multitenancy
Next step
Scaling into enterprise without rewriting your permission architecture?
Share your workspace model, tenancy requirements, or upcoming enterprise security questionnaires. We build battle-tested RLS and ReBAC foundations directly into your database.