Red Hat OpenShift is an enterprise container platform built on Kubernetes. It provides an integrated environment for deploying, managing, scaling, and securing containerized applications across physical, virtual, and cloud infrastructure.

Main architectural components:

• Control Plane – Manages the cluster through the API Server, etcd, Scheduler, Controller Manager, and OpenShift Operators.
• Worker Nodes – Run application pods using kubelet and the CRI-O container runtime.
• Networking – OVN-Kubernetes provides pod networking, routing, load balancing, NetworkPolicy, and ingress/egress connectivity.
• Platform Services – Includes Routes/Ingress, authentication, image registry, monitoring, logging, Operators, and developer tools.
• Storage – CSI-based persistent storage can integrate with Ceph/ODF, SAN, NAS, and cloud storage.
• Infrastructure – OpenShift can run on bare metal, virtualization platforms, private clouds, and public clouds.

In simple terms:
OpenShift = Kubernetes + Networking + Security + Automation + Monitoring + Developer Tools.