SSM Runtime Configuration

This is a reference pattern. Learn from the approach, adapt to your context — don't copy verbatim.

Audience: Service developers (Lambda, ECS, frontend). If you're using CDK to deploy infrastructure, see CDK Bootstrap Configuration.

Problem: Configuration scattered across .env files, CI/CD secrets, and cloud resources becomes out of sync and hard to manage.

Solution: Use AWS SSM Parameter Store as single source of truth for runtime configuration, with minimal .env files only for local development overrides.

Pattern