AMA: Microsoft Teams Security and Governance

Keep in mind Jerry that files will be stored in SharePoint for shared channels. The files are covered by the usual features that SharePoint offers. This is one of the reasons shared channels, like private channels, use a separate site collection. External sharing capabilities can be turned on and off for specific site collections. Shared channels will fall into that category if your organisation chooses to support them and external sharing. The other aspect of Shared channel security with external guests is that you have to use Azure B2B in place. It's a trust relationship between your organisation and the partnering guest org. It's not open to inviting any external guest.

Thanks for asking. This is a great question. There are multiple controls that can be used to manage/secure Shared channels. These include, 1. Control of the external organizations that your organization can collaborate with. 2. Per-User policies to control which users can create and share shared channels. 3. IT admin can view and manage shared channels.

Prior to leveraging Shared Channels an AAD trust needs to be configured. This can be restricted by groups, users etc.

Hi JerryZhangMS Nguyen, Would recommend catching up on this session at Ignite https://myignite.microsoft.com/sessions/cfcdfdfa-7401-414d-ab61-4e834281e7ae?source=sessions This discuss shared channels (teams connect). Shared channels should come with many of the security features that we see today in Microsoft 365. Hope that helps and answers your question Best, Chris