Harness has incorporated Kustomize into its platform, simplifying Kubernetes deployments by allowing configuration management without additional clients and offering a streamlined Kubernetes Delegate setup. This integration complements the existing support for Helm, with Kustomize serving as a configuration manager, unlike Helm, which doesn't claim this function. Harness provides detailed documentation to help users leverage Kustomize across their infrastructure, offering steps to install and configure a Kubernetes Delegate on platforms like Amazon EKS. By linking the Kustomize GitHub repository to Harness, users can create applications and services with environmental variants, using examples such as Kustomize's Multibases for dev/production overlays. The setup includes creating environments, infrastructure definitions, and workflows to manage deployments, with the process enhanced by the Harness Software Delivery Platform for continuous delivery.