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Multi-cloud landing zone

A hardened, versioned Terraform baseline that gives every team a secure place to land — repeatable across AWS and Azure, with security and guardrails built in.

Overview

Teams were standing up cloud accounts and environments by hand — each one configured a little differently, each one securing itself from scratch. The goal was a single, reusable foundation every workload could land on: a hardened landing zone that is consistent across providers and secure by default.

The pattern follows a versioned base template — networking, identity, and guardrails defined once — that each application extends, rather than rebuilding the platform every time.

The challenge

Account and environment sprawl with inconsistent configuration
Security and network design re-done by every team, in slightly different ways
No provider-agnostic standard spanning AWS and Azure
Slow, manual effort to stand up each new environment safely

Our approach

Designed a versioned base landing zone — VPCs, private subnets, security groups, and multi-AZ layout — as reusable Terraform modules
Encoded least-privilege IAM, encryption, and policy guardrails directly into the baseline, so security is inherited, not added later
Kept it provider-agnostic with Terraform, using CloudFormation only where an AWS-native capability required it
Published the base as a versioned blueprint (1.x → 1.y) so each new application lands on a known-good, hardened foundation

Results & business impact

New environments stand up from a known-good baseline instead of a blank account
Network isolation and security posture are consistent by default across teams
A single Terraform codebase spans AWS and Azure, reducing provider lock-in
Configuration drift is reduced because the foundation is versioned and code-reviewed

Tools & technology

Terraform AWS Microsoft Azure VPC & security groups Private subnets Multi-AZ Least-privilege IAM Policy-as-code