Give the announcement bar one current job
Use the bar for one concise, broadly relevant message with a matching destination, owner, and expiry.
Skip this if Stores without a broadly relevant current message that deserves persistent sitewide space
Give the announcement bar one current job: state a broadly relevant fact or promotion and lead to the exact details needed to act on it. Leave the bar empty when no message earns persistent sitewide space.
The bar is narrow, repeated, and present across many pages. That makes it useful for a concise shipping offer, active promotion, service disruption, deadline, or market notice. It also makes vague or stale copy expensive: the store repeats it everywhere.
The rest of this lesson is available once the Atlas is unlocked.