This guide explains how to build a scalable, multi-persona SaaS (Admin, Seller, Shop) using AdonisJS 7 and Inertia.js (React). This architecture ensures isolated bundles, distinct layouts, and full TypeScript safety. 1. Directory Structure Organize your frontend assets by persona: inertia/ ├── app/ │ ├── admin.tsx # Admin Entrypoint │ ├── seller.tsx # Seller Entrypoint │ └── shop.tsx # Shop En