IBM Cloud Kubernetes Service creates a cluster of

Cloud Computing Services provide information technology (IT) as a service over the Internet or dedicated network, with delivery on demand, and payment based on usage. Cloud computing services range from full applications and development platforms, to servers, storage, and virtual desktops. [Source: Dell]

hosts and deploys highly available

A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another. [Source: Docker]

. A Kubernetes cluster lets you securely manage the resources that you need to quickly deploy, update, and scale applications.