Infrastructure as code on AWS from an Advanced Tier Partner: reusable modules, isolated remote state, PR-based plan/apply gates, and policy-as-code guardrails. Founder-led, ISO 27001:2022 certified, and 16+ years of cloud engineering behind every module we ship.
The Terraform stack we standardise on.
Terraform is not just faster provisioning — for FinTech, HealthTech, and compliance-driven SaaS it is the difference between a console you cannot audit and infrastructure you can prove. Four properties that matter when an assessor is in the room.
With infrastructure as code on AWS, no one clicks a production change into existence. Every modification is a Terraform pull request with a plan diff, a named approver, and an immutable git history. That is precisely the change-management and access-control evidence ISO 27001, SOC 2, and DORA assessors ask for — generated as a by-product of how your team already works, not assembled the week before an audit.
Console tweaks and emergency fixes cause drift — the silent gap between what is approved and what is actually running. A scheduled terraform plan surfaces that drift on every run: anything changed outside code shows up as a diff you either codify or revert. For a regulated environment, being able to demonstrate that live infrastructure reconciles to an approved definition is a control in its own right, not a nice-to-have.
Dev, staging, and production built from the same versioned modules means environments differ only by variables, not by whatever someone remembered to click. Rebuilding a region for disaster recovery, or vending a new account, becomes a few module calls instead of a fragile runbook. Reproducibility is also what makes your recovery objectives believable — the environment can be stood up from code, on demand, under your DevOps pipelines.
Because the definition, the change record, and the approval all live in code and version control, the Terraform repository itself becomes an evidence source. We wire policy-as-code and scanning into the pipeline so security controls are enforced and logged, feeding the trail your ISO 27001 and DORA assessors expect. We delivered exactly this pattern — CI/CD plus AWS Config — on our published ISO-hardening engagement.
The difference between Terraform AWS experts and a pile of .tf files is the operating discipline around it. These four standards ship on every engagement, and they are what your engineers inherit at handover.
Battle-tested community modules (terraform-aws-modules for VPC, EKS, RDS, IAM) pinned to explicit versions, wrapped in thin opinionated modules that encode your naming, tagging, and network conventions. The result is an internal module library your team owns — a new service or environment is a handful of module calls, not hundreds of hand-written resources copied between folders.
Encrypted remote state in S3 with a DynamoDB lock table, so concurrent applies can never corrupt state. State is isolated per environment and per account — separate state, separate blast radius — never one file for the whole estate. Versioning is on for point-in-time recovery, access is least-privilege via IAM, and we keep secrets out of plaintext state wherever the provider allows.
terraform plan runs automatically on every pull request and posts the diff for review — reviewers see exactly what will change before anyone approves. Apply is gated behind that approval and a protected branch, with OIDC federation into AWS so pipelines use short-lived credentials, never long-lived keys. This is the same rigour we bring to application delivery in our AWS DevOps and ECS work.
checkov and tfsec catch insecure defaults — public buckets, unencrypted volumes, wide-open security groups, missing logging — and OPA or Sentinel enforce organisation rules like mandatory tags, approved regions, and forbidden instance types. A plan that violates policy fails its check and never reaches apply. It is the shift-left thinking from our DevSecOps practice, applied to infrastructure at review time.
Most teams do not start with a blank repository — they start with years of infrastructure built by hand in the console. We adopt what is already running, without recreating a single resource, in three deliberate steps.
We bring existing resources under Terraform using terraform import and Terraform import blocks, writing code that describes your live estate exactly. Nothing is destroyed and re-created — the running VPCs, databases, and roles are adopted as-is. We work resource group by resource group until state reflects reality.
No big-bang rewrite. We prioritise the highest-risk or most-changed infrastructure first, move it into modules, and leave the rest running untouched until its turn. Each slice ships behind the same plan/apply gates, so the estate is always in a known, reviewable state as coverage grows from a few resources to the whole account.
Once imported, we run terraform plan until it reports zero changes against live infrastructure — the proof that code and reality match. From there, scheduled plans catch any new drift, and manual console changes become the exception you consciously codify or revert. The endpoint is an account where the repository is the source of truth.
Regulated estates outgrow a single account fast — separate accounts for prod, non-prod, security, and shared services are a control, not a luxury. Here is how we decide between AWS Control Tower and a custom Terraform landing zone.
Infrastructure as code and compliance pull in the same direction: both want change to be reviewed, approved, logged, and reproducible. When your AWS estate is defined in Terraform, the artefacts an assessor asks for — change records, access controls, an audit trail, proof that production matches the approved design — already exist in your repository and pipeline.
We deliver this in production and hold ISO 27001:2022 ourselves, so we build IaC to the same standard we operate under. For teams heading into an ISO 27001 certification or preparing for DORA resilience obligations, the Terraform work slots straight into the wider evidence trail — and pairs naturally with our DevSecOps guardrails.
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Book a call →Whether you're moving off ClickOps, cleaning up sprawling state, adding plan/apply gates, or building a multi-account landing zone for an audit — start with a free infrastructure-as-code review directly with the founder. One concrete recommendation, no commitment required.
★ AWS Advanced Tier Services Partner · ISO 27001:2022 · Terraform AWS Experts
