This two-part blog post explores Infrastructure as Code (IaC), a modern approach to managing cloud infrastructure programmatically. The first part explains why manual cloud configuration is problematic, highlighting challenges such as human error, lack of version control, and difficulty replicating environments. IaC addresses these issues by treating infrastructure similarly to application code, enabling version control, automated deployments, and CI/CD pipeline integration. Popular tools discussed include Terraform, Pulumi, and cloud-specific solutions like AWS CloudFormation and Azure Resource Manager.

The second part provides a practical walkthrough of using Terraform with Google Cloud Platform. It covers installing necessary tools, setting up authentication, and creating cloud resources programmatically. The tutorial demonstrates creating a virtual machine, making configuration changes, and observing how Terraform detects and corrects unauthorized manual changes. The post concludes by showing how to cleanly remove all created resources using Terraform’s destroy command.