GitHub Actions is a powerful tool for CI/CD, but the costs and scalability of GitHub-hosted runners can become a burden as projects grow. Self-hosted runners offer a cost-efficient alternative, allowing for greater customization and better resource utilization. Actions Runner Controller (ARC) facilitates the management of self-hosted runners on Kubernetes, automating tasks and ensuring efficiency. The post outlines the benefits, prerequisites, installation steps, and maintenance tips for deploying ARC to enhance CI workflows.