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Infrastructure as Code

Imagine building a house with LEGO: instead of placing every brick by hand without a plan, you follow clear building instructions.

Infrastructure as Code (IaC) works the same way for IT. You use code files as "instructions" to create and manage infrastructure (for example Azure resources).
By treating infrastructure like code, building, changing, and maintaining environments becomes faster, more consistent, and less error-prone than manual clicking in a portal.

What is Infrastructure as Code (IaC)?​

Infrastructure as Code (IaC) means you describe infrastructure in code (templates) instead of configuring everything manually.

  • You define what you want (the desired end state): e.g., "a resource group in West Europe", "a virtual network", "a storage account".
  • A deployment tool (for Azure, for example Bicep) makes sure Azure creates or updates resources to match that description.

Why use IaC?​

  • Repeatable deployments: deploy the same setup to dev/test/prod using the same template (often with different parameters).
  • Fewer human mistakes: less risk of missed settings or click errors.
  • Faster provisioning: environments can be deployed in minutes.
  • Standardization: naming, tagging, security rules, and regions can be consistent.
  • Audit and control: changes are trackable and reviewable (usually via Git + Pull Requests).
  • Easier recovery: you can redeploy a known-good version when needed.