Kustomize

• It is a standalone tool to customise the creation of Kubernetes objects through a file called kustomization.yaml.

• It introduces a template-free way to customize application configuration

• It lets you customize an entire Kubernetes application without touching the actual YAML files.

• All the customization can be specified and can also be overridden in a special file called kustomization.yaml file. 

• It is natively built into kubectl and follows a purely declarative approach to configuration customization. Without any further due, let's get into the hands-on section of Kustomize.

• kustomize vs helm