Monorepo vs multi-repo for Terraform - When to Use Which

The Big Idea

Discover how organizing your Terraform code can save hours and prevent costly mistakes!

The Scenario

Imagine you manage many infrastructure projects, each with its own Terraform code stored in separate places. You have to switch between folders or repositories to update or check configurations.

The Problem

This manual way is slow and confusing. You might forget which repo has the latest code, accidentally change the wrong files, or spend hours merging updates across repos. It's easy to make mistakes that break your infrastructure.

The Solution

Using a monorepo or multi-repo strategy organizes your Terraform code clearly. A monorepo keeps all code in one place for easy sharing and consistency. A multi-repo splits code by project for focused work. Both help you manage changes safely and faster.

Before vs After

✗ Before

cd repo1 && terraform apply
cd ../repo2 && terraform apply

✓ After

terraform workspace select project1
terraform apply
terraform workspace select project2
terraform apply

What It Enables

You can confidently update infrastructure code, track changes, and collaborate without losing time or risking errors.

Real Life Example

A company managing cloud resources for multiple teams uses a monorepo to share common modules and keep all Terraform code consistent, speeding up deployments and reducing mistakes.

Key Takeaways

Manual handling of multiple Terraform repos is slow and error-prone.

Monorepo and multi-repo strategies organize code for better management.

Choosing the right approach helps teams work faster and safer.