Containers and Virtualization

This hub groups the Webie guides on containers, orchestration, runtimes, hypervisors, and comparisons that cleanly separate developer workflow, runtime, orchestration, and fleet management. It is the right place if you want the correct stack without mixing products that live at different abstraction layers.

What this hub covers

direct comparisons such as Docker vs Kubernetes and Podman vs CRI-O
stack comparisons such as Docker vs Rancher or OpenShift vs containerd
trends around cloud native, AI workloads, security, and cost governance
analysis of Proxmox VE, Nutanix AHV, XCP-ng, VMware, and other virtualization platforms

How to read it

Start with the general comparison, then move into the pages that explain the exact layer each product belongs to. After that, continue with trends and virtualization comparisons so you can see where containers meet host infrastructure and real commercial decisions.

Recommended order

Stack deep dives

Virtualization deep dives

SMB and homelab paths

If you are choosing a production stack, compare it with the virtualization layer as well. Sometimes the better answer is a simpler runtime; other times it is a more mature platform such as Proxmox VE, XCP-ng, or Nutanix AHV.

Containers and virtualization: use the right layer for the decision

The biggest failure in this cluster is layer confusion. Teams compare Docker with Rancher, OpenShift with containerd, or microVMs with Kubernetes as if they solve the same problem. This hub is meant to stop that confusion and guide decisions by developer workflow, runtime, orchestration, platform governance, and hypervisor model.

Decision layer	Start here	What it answers
Developer workflow	Docker vs Podman	How containers are built, run, and tested locally
Kubernetes runtime	containerd vs CRI-O	How nodes execute workloads inside the cluster
Platform governance	OpenShift vs Rancher	How teams manage multi-cluster policy, access, and lifecycle
Virtualization and cost	Virtualization platforms compared	How host infrastructure and commercial models affect the decision

Primary references for this cluster

Use Kubernetes documentation, Docker documentation, Podman documentation, OpenShift documentation, Proxmox VE documentation, and Microsoft Hyper-V documentation when validating claims linked from this hub.

FAQ: choosing the correct infrastructure layer

What is the first question before comparing two tools?

Ask which layer the decision belongs to: local development, cluster runtime, platform management, or host virtualization. Most wrong comparisons start by mixing layers.

When should cost be compared?

After the layer is clear. A cheap runtime does not solve a platform governance problem, and an affordable hypervisor does not replace missing container operations skill.

Practical CTA: use this hub to write the decision layer, operator owner, rollback path, and support model before standardizing any container or virtualization stack.

What this page should help you do next

This page exists to reduce the next decision step, not to accumulate generic reading. The useful move from here is to pick the correct hub, trust page, or action page and turn it into a small checklist that can be applied on a live site or workflow.

Practical checklist CTA: choose the next page by decision type, then write one short plan, one owner, and one follow-up date.