---
name: "tech-one-codebase-oss-saas"
title: "One codebase OSS + SaaS"
description: "Ship self-host and cloud from one tree behind a fail-closed mode flag"
type: "tech"
category: "architecture"
tags: ["tech", "architecture", "oss"]
related: ["[[project-clickhouse-monitoring]]", "[[tech-single-source-env]]"]
---
Pattern: single high-level deployment mode (`oss|cloud`) that resolves auth/storage defaults. Unset/junk → OSS so open source never degrades.

Never gate core product features behind cloud-only. Example product: [[project-clickhouse-monitoring]]. Env: [[tech-single-source-env]].