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AI Powered SaaS: Stripe + Auth + Billing + Deploy · Lesson

Environment Variables & Secrets Management

Configure your SaaS safely across environments by managing secrets, separating public and private variables, and avoiding leaking keys to the client.

Why Configuration Matters

A SaaS connects to databases, payment providers, and AI APIs — each with keys that differ per environment. Environment variables keep them out of code so one codebase runs anywhere.

The .env File

Local config lives in a .env file as plain key-value pairs. It's loaded at startup and must never be committed to git.

DATABASE_URL=postgresql://localhost/app
STRIPE_SECRET_KEY=sk_test_123
OPENAI_API_KEY=sk-abc

All lessons in this course

  1. Intro to SaaS & AI Synergy
  2. Choosing Your Tech Stack
  3. Project Initialization & Structure
  4. Environment Variables & Secrets Management
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