In cloud computing, what platform is widely used to orchestrate and manage containers across clusters?

• A. Docker Compose
• B. OpenStack
• C. VMware vSphere
• D. Kubernetes

Answer: (D)

Coordinating and running containers across many machines needs a system that can automatically place workloads, monitor health, and adjust resources as demand changes. Kubernetes provides that by offering a control plane that tracks the desired state of applications and uses a scheduler to place pods on worker nodes, restarts failed containers, scales them up or down, and exposes them through stable network identities. It handles rolling updates safely, supports automatic scaling with the Horizontal Pod Autoscaler, and manages storage through persistent volumes and claims. Its declarative approach means you describe what you want in manifests, and Kubernetes continually works to ensure the actual state matches that intent. It also works with different container runtimes and is widely supported across cloud providers, making it the go-to platform for orchestrating containers across clusters.

Docker Compose is designed for local, single-host setups and doesn’t scale to clusters. OpenStack focuses on managing virtual infrastructure at scale, not primarily on container orchestration. VMware vSphere is a virtualization platform for virtual machines, not a container orchestration platform.