Microsoft announced private channels for Teams at Ignite on Nov. 4, 2019, saying the feature would be available starting that week. A private channel sat inside an existing team but could be viewed and accessed only by selected team members. The distinction matters for organizations deciding whether a focused group needs its own collaboration space or an entirely separate team. [S1]

Microsoft described creating one by choosing “Private” in the new-channel privacy settings. That announcement establishes the intended membership boundary and the company’s availability statement; it does not independently establish how well the feature enforced access or what outcomes customers achieved. [S1]

Source documents

  1. What’s New in Microsoft Teams | Microsoft Ignite 2019https://techcommunity.microsoft.com/blog/microsoftteamsblog/what%E2%80%99s-new-in-microsoft-teams--microsoft-ignite-2019/937025