Building Multi-Tenant SaaS: An Architecture Guide

Multi-tenancy is the backbone of any SaaS. Get it right early and scaling is painless; get it wrong and you'll re-platform later.

The three tenancy models

• Shared schema — one database, a tenantId on every row. Simplest and cheapest; fine for most SaaS.
• Schema-per-tenant — stronger isolation, more operational overhead.
• Database-per-tenant — maximum isolation for enterprise/compliance, highest cost.

Our default

Most products start with a shared schema plus strict row-level scoping and move heavier customers to dedicated resources only when they need it. Don't pay for isolation you don't need yet.

Planning a SaaS? We'll design a tenancy model that fits your stage and budget.