Suggest an editImprove this articleRefine the answer for “What does "immutable tag" mean?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)An **"immutable tag"** is an image tag that cannot be changed after publication. **Key point:** an immutable tag is a version of an image that cannot be changed after publication; this guarantees stability and repeatable builds.Shown above the full answer for quick recall.Answer (EN)ImageAn "immutable tag" is an image tag that **cannot be changed after publication**. If a tag is marked as immutable, it cannot be overwritten with a new version of the image, only a different tag can be created. ### Why this is done - to avoid a situation where the same tag points to different versions of an image; - so that a deployment is always predictable; - so that `v1.0` today and `v1.0` a year from now are the same image, byte for byte. ### Example - `myapp:1.0` - immutable - `myapp:latest` - usually **mutable** (can be overwritten) ### In short **Immutable tag = a version of an image that cannot be changed after publication.** This guarantees stability and repeatable builds.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.