Why do teams create internal-only chat groups?

Teams often create internal-only chat groups when certain discussions should not involve external stakeholders or the entire organisation. For example, project teams may want to discuss internal strategies, vendor negotiations, or design revisions before presenting them to clients or partners. Messaging platforms such as WhatsApp, Slack, and Microsoft Teams make it easy to create separate groups for these discussions. However, when teams repeatedly create new groups for different combinations of participants, communication can become fragmented. Conversations related to the same project may be scattered across several groups, making it difficult to track decisions and project updates.