Multi-Tenant SaaS
Architecture Hub
A practitioner's reference for building production-grade multi-tenant systems. Eighty-five in-depth guides across five domains — from row-level security and tenant-aware JWTs to hybrid isolation tiers, cross-tenant leak detection, revenue reconciliation, access certification and tenant offboarding — each with runnable code, hand-drawn architecture diagrams and a decision table.
Who is this for?
SaaS founders, backend and full-stack engineers, platform architects, and security engineers building or scaling multi-tenant systems with real isolation requirements.
What's covered?
Row-level security, schema-per-tenant routing, hybrid isolation tiers, tenant-aware JWTs, SSO and SCIM provisioning, connection pooling, leak detection, audit logging, encryption key management, offboarding, and revenue reconciliation.
How to use it?
Each guide is self-contained: comparison tables, hand-authored architecture diagrams, production-ready snippets in TypeScript, Go, Python, SQL, Terraform and YAML, verification queries, named failure modes, and an FAQ.
Five Core Domains
Everything You Need to Build Isolated SaaS
Deep-dive guides across the five domains of multi-tenant architecture — isolation, access, routing, billing, and compliance.
Auth Isolation & Cross-Tenant Access Control
Enforce strict identity boundaries without sacrificing B2B collaboration. JWT token architecture, SSO federation, RBAC hierarchies, session isolation, and compliance-grade audit logging.
Multi-Tenant Database Isolation Models
Choose the right isolation model for your compliance posture and scale. Shared DB with RLS, schema-per-tenant routing, and dedicated database instances — with migration strategies for each transition.
Tenant-Aware Data Routing & Query Scoping
Deterministic tenant routing from edge to persistence. ORM middleware configuration, connection pool management, tenant context injection, GraphQL scoping, and SQL injection prevention.
Tenant Billing & Usage Metering
Turn tenant activity into revenue without double-counting or drift. Event-driven metering pipelines, idempotent ingestion, tenant-partitioned time-series, plan and quota enforcement, and Stripe synchronization.
Multi-Tenant Compliance & Data Governance
Meet GDPR, HIPAA, and SOC 2 obligations per tenant without bespoke one-offs. Tamper-evident audit logging, data subject requests and deletion, per-tenant encryption with KMS, and data residency routing.
Start Here
The Decisions Most Teams Face First
Six guides that answer the questions that come up before any code is written.