Building Multi-Tenant SaaS with Laravel: Complete Guide

What is Multi-Tenancy?

Multi-tenancy allows multiple customers (tenants) to share the same application while keeping their data completely isolated. This architectural pattern is the backbone of every successful SaaS product.

Approaches to Multi-Tenancy

There are three main approaches: single database with tenant_id columns, separate schemas per tenant, and separate databases per tenant. Each has trade-offs in complexity, performance, and cost.

Implementation with Laravel

Laravel's Eloquent global scopes make it trivial to enforce tenant isolation automatically. Combined with middleware for tenant resolution, you get a clean, secure architecture without polluting your business logic.