What is multi-tenancy in Laravel?

Multi-tenancy means serving multiple customers (tenants) from a single application while keeping their data, configuration, and users isolated. In Laravel we use three patterns. Single database with a tenant_id column (simplest, best for early stage). Single database with separate schemas (good middle ground for compliance and isolation). Database per tenant (strongest isolation, used for enterprise tier or regulated industries). The Stancl tenancy package handles all three patterns and we pick the right one during discovery.