You can integrate third-party web components into your Lightning Web Components (LWC) apps without rewriting them. To render them as native web components in LWC templates, use lwc:external. This feature is now generally available, with no changes since the last beta release.
Where: This change applies to Lightning Experience in all editions.
How: For more information on LWC support for external web components, see Lightning Web Components Developer Guide: Use Third-Party Web Components in LWC.