This experiment uses Alibaba Cloud Container Service for Kubernetes. This experiment shows how to use ConfigMap and Secret to pass application configuration information in Kubernetes. Alibaba Cloud Container Service for Kubernetes (ACK) is one of the first certified service platforms that obtain the certificate of conformance from Kubernetes in the world. It provides high-performance and scalable container application management services, and enables you to manage the lifecycle of enterprise-level containerized applications by using Kubernetes. ACK simplifies the deployment and scaling of Kubernetes clusters and integrates Alibaba Cloud capabilities of virtualization, storage, networking, and security. Based on these capabilities, ACK builds a best-in-class runtime environment for Kubernetes-based containerized applications, and provides professional container support and services.