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openshift-docs/modules/microshift-4-21-about-this-release.adoc
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// Module included in the following assemblies:
//
//microshift_release_notes/microshift-4-21-release-notes.adoc
:_mod-docs-content-type: CONCEPT
[id="microshift-4-21-about-this-release_{context}"]
= About this release
[role="_abstract"]
Built on {OCP} and Kubernetes, {microshift-short} provides an efficient way to operate a single node in low-resource edge environments.
{microshift-short} is designed to make control plane restarts economical and be lifecycle-managed as a single unit by the operating system. Updates, roll-backs, and configuration changes consist of simply staging another version in parallel and then - without relying on a network - flipping to and from that version and restarting.
Version {product-version} of {microshift-short} includes new features and enhancements. Update to the latest version of {microshift-short} to receive all of the latest features, bug fixes, and security updates. {microshift-short} is derived from {OCP} {ocp-version} and uses the CRI-O container runtime. New features, changes, and known issues that pertain to {microshift-short} are included in this topic.
You can deploy a {microshift-short} node to on-premise, cloud, disconnected, and offline environments.
{microshift-short} {product-version} is supported on {op-system-base-full} {op-system-version}.
For lifecycle information, see the link:https://access.redhat.com/product-life-cycles?product=Red%20Hat%20build%20of%20Microshift,Red%20Hat%20Device%20Edge[{product-title} Life Cycle Policy].