Building a Multi-Tenant SaaS with NestJS and TypeORM

Multi-tenancy is the foundation of AutopilotMonster. Every API request carries tenant context, enforced at the database layer with row-level isolation.

We chose NestJS for modular domain boundaries and TypeORM for entity-driven migrations across 76+ tables.

This architecture lets us ship features once and deploy to thousands of tenants with zero cross-tenant data leakage.