Learn ATLANTIS-TERRAFORM with Real Code Examples

Atlantis integrates Terraform with Git workflow for automated CI/CD.

Runs `terraform plan` on pull requests and `terraform apply` on merge.

Prevents unsafe Terraform operations on production infrastructure.

Tracks changes and provides comments directly in pull requests.

Supports multi-repository, multi-workspace, and multi-project configurations.

Atlantis server - central controller that listens to Git webhooks

Atlantis webhook - triggers plan/apply events

Terraform plan automation - preview infrastructure changes

Terraform apply automation - apply approved changes

GitHub/GitLab/Bitbucket integration - PR comments and approvals

Project - a Terraform codebase or module in a repo

Workspace - Terraform workspace for a project

Plan - preview of Terraform changes

Apply - execution of approved Terraform changes

Locking - prevents concurrent `apply` runs

Terraform code directory

atlantis.yaml - project configuration

Backend configuration for state storage

Git repository for code versioning

Optional modules and shared libraries

Create a Git branch with Terraform changes

Open a pull request

Atlantis runs `terraform plan` and comments in PR

Review and approve changes

Run `terraform apply` via Atlantis comment once approved

Beginner: Single repo, single workspace automation

Intermediate: Multi-project repository setup

Advanced: Multi-workspace and multi-repo orchestration

Expert: Enterprise GitOps Terraform pipeline with CI/CD integration

Architect: Multi-cloud Terraform infrastructure with Atlantis workflow enforcement

Atlantis vs Terraform Cloud: GitOps PR automation vs SaaS Terraform management

Atlantis vs Jenkins: PR-level Terraform workflow vs general CI/CD

Atlantis vs GitHub Actions: Git-native automation vs workflow runner

Atlantis vs Spacelift: Open-source vs enterprise SaaS automation

Atlantis vs Terraform Enterprise: PR automation vs managed Terraform lifecycle

Project - Terraform code directory configured for Atlantis

Workspace - Terraform workspace

Plan - preview of Terraform changes

Apply - execution of approved changes

atlantis.yaml - configuration file for projects