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Infrastructure as code

Terraform plans that make infrastructure changes reviewable

Treat configuration, state, and apply approvals as a controlled workflow—automation still needs cloud judgment.

Primary intent: Declarative infrastructure as code and environment reproducibility

DeclareConfig

ReviewPlan

RecordState

ChangeApply

Plan, State and Drift Workflow

Choose new environment, controlled change, or drift review scenarios.

Static view: configuration, plan, review, state, apply, cloud resources, and drift detection form the workflow.

Controlled change

Modify existing infrastructure with review.

Config diff
Plan
Approval
Apply
Verify

Responsibilities

Blast-radius notes
Rollback idea
Change window

Tradeoff: Applying unreviewed plans invites surprises.

Problems this stack addresses

Terraform provisions and updates infrastructure declaratively. It is not GitHub Actions CI, not a cloud provider, and not Kubernetes manifests. It does not eliminate cloud expertise or make all drift safe to auto-fix.

Reproducible environments across stages
Reviewable infrastructure changes
Reduced configuration drift through intentional workflows

What we build with Terraform

Illustrative delivery shapes—not a guaranteed catalog.

Environment modules
Reusable modules with clear input contracts.
Remote state backends
Locked state with access controls.
Change pipelines
Plan-in-PR, apply-with-approval patterns.

Architecture and deployment model

Platform role

Declarative provisioning across cloud providers
Change control companion to CI/CD
Not a substitute for cloud platform design skill

Architecture layers

Configuration and modules
Providers and resources
State and locking
Plan/apply and drift detection

Plan, state and drift workflow

Configuration → plan → review → state → apply → cloud resources → drift detection.

State honesty

Corrupted or shared state without locking creates dangerous applies.

CI relationship

GitHub Actions can run plan/apply; Terraform remains the IaC engine and state owner.

Security and shared responsibility

Shared responsibility

State may contain sensitive attributes—protect it
Provider credentials least-privilege
Module sources reviewed like dependencies

Identity and access

Separate plan and apply identities when useful
Human break-glass documented
No long-lived keys in repositories

Networking

Provision network resources intentionally
Avoid accidental public exposure in modules
Document peering and DNS ownership

Reliability, scaling and operations

Observability

Track apply history and authors
Alert on failed applies
Correlate infra changes with incidents

Reliability / recovery

State backup/versioning strategy
Rollback is not always trivial—design escape hatches
Drift review before blind applies

Scaling

Large states slow plans—modularize
Workspace/environment strategy prevents collisions
Parallelism tuned carefully

Delivery, automation and cost governance

Delivery workflow

PR plan → review → merge → apply
Environment promotion via workspaces or separate states
Manual approval for production applies

Automation / IaC

This page is the IaC authority among EXP-B3 tools
Still requires cloud provider expertise
Not all drift should be auto-applied

Cost / governance

Plans reveal costly resources before apply
Tagging enforced in modules
No automatic cost-optimization guarantee

Integration patterns

AWS / Azure / Google Cloud providers
GitHub Actions plan/apply
Kubernetes cluster provisioning
Docker registries as resources

When to choose / when not to choose

Choose when

You need reproducible multi-environment infrastructure
Changes must be reviewable before apply
Multiple clouds or many resources benefit from modules

Reconsider when

A single click-ops resource with no repeat need
Team cannot protect state backends
Another org-standard IaC tool is mandated

Tradeoffs

Declarative clarity vs state management burden
Module reuse vs abstraction opacity
Automation speed vs review quality

Migration / modernization notes

Import existing resources carefully with state reviews
Do not rewrite all cloud console history in one apply
Establish tagging and naming before mass adoption

Proof and capability boundary

Capability-level IaC guidance. No claim Terraform removes cloud expertise or safely auto-resolves all drift.

No claim IaC removes expertise; no safe auto-fix-all-drift promise.

Does Terraform eliminate the need for cloud expertise?

No. Providers encode APIs, but sound architecture, IAM, networking, and cost judgment remain human responsibilities.

Can all drift be auto-fixed safely?

No. Some drift is emergency hotfix. Triage before apply; blind auto-remediation can be harmful.

Discuss Terraform workflows

Share providers and environments—we will outline module and state/change-control practices.

Begin stack consultation