Open a preview
Every pull request or draft publish gets a unique preview URL. Open it from the deploy detail page — do not reuse an old bookmark after a rebuild.
Share safely
Share the preview with stakeholders for content and UX review. Previews are not indexed; still avoid real customer PII in test data.
Environment variables
Preview and production secrets are separate. Sandbox payment keys belong on preview; live keys stay on production only.
Promote
When QA passes, promote from the same deploy record. Prefer promote over rebuilding so you ship the exact bits that were tested.