Architecture

Building Multi-Tenant SaaS: Architecture Decisions That Scale

2026-01-13 · 8 min · Safecoiner Team

The three big decisions

  1. Isolation model — shared schema with row-level security is the pragmatic default; separate databases only when compliance demands it.
  2. Tenant routing — resolve the tenant once, early, and carry it through every query.
  3. White-labeling — keep branding as data, not as forks of the codebase.

Get these right and scaling becomes an infrastructure problem, not a rewrite.

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