# CKEditor 5 updates and maintenance

This section explains how to keep your CKEditor 5 installation up to date. It covers updating between versions, migrating to the new installation methods or the CDN, moving from CKEditor 4, day-to-day maintenance, and our versioning and release policy. Keep all CKEditor 5 packages on the same version, and update one version at a time to avoid unexpected issues.

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## Migration to CDN

Migrate your CKEditor 5 from an NPM-based installation to a CDN-based one (for example [Vanilla JS](migrations/vanilla-js.md)). CDN-based installations can simplify the setup process by providing a bundler-agnostic way to lazy initialization of CKEditor 5 scripts and styles injection. It reduces complexity in the project setup.

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## New installation methods

This section will explore the [new installation methods](nim-migration/migration-to-new-installation-methods.md) introduced in CKEditor 5 v42.0.0. These methods make CKEditor 5 much easier to use by reducing the number of possible installation paths and removing most of the limitations of the old methods.

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## Migration from CKEditor 4

If you want to switch to CKEditor 5 from our previous product, CKEditor 4, please refer to the dedicated [Migration from CKEditor 4](ckeditor4/migration-from-ckeditor-4.md) guide that will explain all the differences between these two products and help you make the switch.

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## Daily maintenance of regular operation of CKEditor 5

For general tips on how to take care of your CKEditor 5 installation, please refer to the [Maintaining your editor](maintaining.md) guide for tips on how to provide the daily service and make the editor work efficiently and without interruptions.

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## CKEditor 5 versioning policy and release process

Regular code releases bring new features and improvements to CKEditor5. Visit the [Versioning policy](versioning-policy.md) section to check release practices and versioning strategy.

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## Updating your CKEditor 5

Visit the [Updating CKEditor 5](guides/updating-ckeditor-5.md) guide for information on how to update your installation to the newest available stable version of the software. Visit the dedicated update guides for specific CKEditor 5 release versions if you need to catch up with the latest release.

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Full index of the CKEditor 5 documentation: [llms.txt](../../llms.txt)