Your client wants to provide periodic updates to their employees via Slack channels to decrease the number of emails and mandatory meetings. However…

An announcement-only channel is the ideal solution. By restricting posting permissions to specific individuals, such as team leads or internal communications staff, the client can ensure that only official updates are shared. This prevents important messages from being buried in conversational noise, directly addressing the concern that employees might miss the updates. Employees can still read all messages and use threads to ask questions, but the main channel remains clear and focused on key information, reducing the need for emails and meetings.

A. A private channel limits visibility to only invited members, which is not suitable for company-wide updates.

C. A public channel allows anyone to post, which would lead to the conversational noise the client wants to avoid.

D. A multi-workspace channel (shared channel) is for connecting with external organizations, not for internal announcements.

1. Slack Help Center. (n.d.). Create a channel. Retrieved from https://slack.com/help/articles/201402297-Create-a-channel. See section: "Create announcement-only channels".

2. Slack Help Center. (n.d.). Set channel posting permissions. Retrieved from https://slack.com/help/articles/360017932493-Set-channel-posting-permissions. This document details how to restrict who can post in a channel, the core feature of an announcement-only channel.