Salesforce Chatter groups are the least amount of effort while providing the most amount of value. Salesforce Chatter groups can be launched quickly to address urgent notifications like outages or other critical situations. They can be expanded in both breadth and depth, meaning more Chatter groups for different segmentations and content (more frequent posts or enriched content). Some Chatter Group benefits include: 

• Having a real-time user list for anyone to communicate quickly.
  • Users can be added to relevant Chatter groups during provisioning or batched regularly. Define different groups as desired, this might mirror access to certain tools, varying roles/levels, or an entire implementation.
• Chatter is great for time-sensitive messages. Users most likely need to know something immediately and in detail while that same message can be summarized to leadership in the following regular communication. There should be a clear, common thread across communications that can be achieved by reusing content, just presented differently.
• Using Chatter to communicate helps users become more familiar with Salesforce.
• The open conversation educates other Chatter group members who don't even partake in the conversation. You'll notice a count for how many people saw the post.
• Rare outages in Salesforce make it a great tool to communicate unexpected downtime in Marketing Cloud (or other platforms).

Rolling Out Chatter