# Release a change

URL: /workflows/processes/release/release-change · Id: `workflow:release-change`

> Release a change merges a Change that passed its verdict and deploys it in stages, reverting automatically on a guardrail breach.

Release a change merges a [Change](/business/nouns/change) that passed its verdict and deploys it in stages, reverting automatically on a guardrail breach.

## Trigger
Runs on [`Change.reviewed`](/business/events/Change.reviewed). Part of [Release](/workflows/processes/release), run by the [Engineering Team](/agents/engineering).

## Steps
1. Read the Change’s verdict.
2. Merge the Change into a new Version.
3. Deploy the Version to 1%, 10%, 50%, then all traffic.
4. Revert automatically when a guardrail Metric drops.
5. Write the changelog entry from the Change’s description.

## Outputs
- [Version](/business/nouns/version)

## Example
A Change passes its verdict and merges as [Version](/business/nouns/version) 12. It reaches 1%, then 10% of traffic, and reverts when error rate rises.