Configuration as Code (CaC) is an increasingly essential practice for software developers and DevOps teams, allowing the setup of operating systems and software through configuration files that seamlessly integrate with CI/CD and version control pipelines. It promotes consistency across environments by using definition files stored in Git repositories, thus eliminating manual errors and enhancing reliability through automation and versioning. This approach relies on idempotency and can be implemented using declarative or imperative models, with tools like Ansible, Terraform, and Puppet offering distinct advantages for different use cases. In Kubernetes, CaC aligns with the platform's declarative configuration model, simplifying the management of resources such as deployments, ConfigMaps, and secrets. Each CaC tool has unique strengths—Ansible for its simplicity and procedural clarity, Terraform for its robust infrastructure as code capabilities, and Puppet for managing complex, scaled deployments. The article emphasizes the complementary nature of these tools and the importance of integrating CaC into Kubernetes environments to achieve scalability, repeatability, and reliability, ultimately enhancing operational efficiency and collaboration.