Introduction
In enterprise DevOps and cybersecurity, the foundation of everything is secure, well-segmented infrastructure.
To demonstrate this, I built Mini Enterprise Infrastructure on Azure using Terraform, a minimalist, IaC-driven setup that provisions an enterprise-grade Azure environment with zero compute cost and no public exposure.
This project shows how to define your network, storage, and security posture entirely in code, using nothing but Terraform and Azure’s free tier.
🔑 What It Does
✅ Defines a private IP space (10.10.0.0/16) for internal-only networking.
✅ Carves a dedicated subnet (10.10.1.0/24) for future workloads.
✅ Locks down a private storage account for SIEM/log aggregation or artifacts.
✅ Runs 100% in Azure’s free tier — no virtual machines, no public endpoints, no cost.
✅ Serves as a base layer for security, logging, or automation pipelines.
⚙️ Architecture at a Glance
Two key layers define the architecture:
1. Network Foundation
Establishes a private VNet and subnet space, enforced through an Azure Network Security Group.
The NSG rules are minimal by design (SSH/HTTP only), intended for controlled expansion.
2. Secure Storage Layer
Implements a private Blob Storage Account (LRS replication, TLS 1.2 enforced).
A lifecycle policy automatically cleans up stale blobs after 30 days, ideal for logs or SIEM data retention.
Analogy:
Think of it like building your own private “mini-cloud” inside Azure, invisible to the public, free to maintain, and ready for scalable security integrations.
🧠 Design Philosophy
- Code-first: Every change is tracked in main.tf, portable, auditable, and version-controlled.
- Zero Trust-friendly: No implicit access; everything runs inside the private network.
- Cost-efficient: Free-tier only, ideal for demos, labs, or PoC automation.
- Extendable: The same framework can plug into Sentinel, Defender for Cloud, or custom SIEM pipelines.
📂 Repository Structure
azure-mini-iac-demo/
├── main.tf # Full infrastructure definition
├── variables.tf # Configurable inputs
├── outputs.tf # Deployment outputs
└── README.md # Setup guide
🛠️ Tech Stack
- AzureRM Provider v4+
- Terraform 1.5+
- Random Provider (for globally unique naming)
- Azure CLI (authentication context)
- Visual Studio Code (IaC editing & validation)
🌟 Why It Matters
Too often, “cloud security” starts after the workload is live.
This demo proves the opposite: security begins at design, at the network and storage layer.
By codifying your infrastructure:
- You guarantee consistency across environments.
- You enforce least privilege and isolation by design.
- You eliminate manual drift and misconfiguration risk.
📍 Check It Out
👉 GitHub Repository: azure-mini-iac-demo
👉 Demo Video: Build a Mini Enterprise on Azure with Terraform | Free-Tier Cloud Infrastructure
✨ Closing Thoughts
Even a simple IaC project can embody enterprise-grade principles, segmentation, least privilege, automation, and zero trust.
This is the power of thinking like an architect even in small-scale deployments.
If you’re building in Azure, start with the foundation.
Code your perimeter. Control your exposure. Build security into the blueprint.
✍️ Author: Jibril Anifowoshe — October 2025
Cybersecurity Architect & AI Engineer | $900M Risk Reduction • Zero Trust Design • Advanced Threat Modeling • Incident Response Leadership | Innovating with Agentic AI
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