As an Org Admin in your organization's Slack Enterprise Grid instance, you manage the existing...

According to Slack Enterprise Grid administration best practices:

"Org-wide channels allow messages to be broadcast to every member of an Enterprise Grid organization, across all current and future workspaces."

Creating an org-wide channel ensures that the training communications are visible everywhere, without needing coordination with individual Workspace Admins or external partners. Multi-workspace channels (B) are helpful but only span selected workspaces, not automatic inclusion in all future workspaces.

(Reference: Slack Administration Study Guide - Org-wide Channels)

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