What Is Infrastructure as Code?

Infrastructure as Code (IaC) is the practice of defining and managing infrastructure through code or declarative configuration files instead of manually creating resources through a cloud portal. For example, instead of manually creating a virtual network, storage account, App Service, and database, a development team can define the desired infrastructure using technologies such as: Azure Bicep ARM templates Terraform The infrastructure definition can then be stored in Git and deployed through a CI/CD pipeline. A typical process is: Code → Version Control → Validation → CI/CD Pipeline → Azure Resources IaC provides several important benefits: Consistency The same infrastructure configuration can be reproduced across development, testing, and production. Version control Infrastructure changes can be reviewed and tracked just like application code. Automation Teams can automatically create and configure environments. Reduced manual errors Automated deployment reduces configuration mistakes caused by manual setup. Governance Organizations can standardize how resources are created and configured. However, simply writing infrastructure as code does not guarantee a good architecture. Teams must also consider secrets management, state management, modularity, security, dependency management, testing, and drift detection. IaC is therefore a fundamental DevOps and cloud engineering practice for building repeatable, scalable, and maintainable cloud environments.