Platform Overview

Architecture

• Frontend: Next.js 16, Tailwind CSS v4, Zustand
• Backend: NestJS 11, Prisma 7, PostgreSQL
• Infrastructure: Azure App Service, Azure PostgreSQL Flexible Server

Multi-Tenancy

Every workspace is a tenant. Tenants are isolated via tenant_id on every database row.

Multi-Company

Within a tenant, you can create multiple companies. Company isolation uses 7 layers:

1. X-Company-Id HTTP header
2. CompanyGuard (access validation)
3. CompanyScope (Prisma where clauses)
4. DomainEvent (company context in events)
5. CHECK constraints (NOT NULL on company_id)
6. Foreign keys (ON DELETE RESTRICT)
7. Row-Level Security (PostgreSQL policies)

Event-Driven Integration

16 domain events connect modules automatically. For example:

• Inventory adjustment → GL entry (COGS)
• Payroll posting → GL entry (salary expense)
• Progress claim → Invoice → Revenue

Feature Gating

92 features are gated across 5 pricing tiers using the @RequireFeature() decorator.