Roll back or change a publication
You can change the served version per target and thus return to an earlier state.
Roll back to an earlier version
In the Publishing area you can roll a publication back to an earlier version. This creates a new publication pointing to the older version — the newer one isn’t deleted but superseded.
Why this is reliable
Because every version is kept as an immutable snapshot, a defined earlier state can be served again at any time — traceably and without data loss.