Chat storage for Externally-hosted Teams meetings

Hi SW-SoCo2 ,

When you participate in a Teams meeting hosted by an external agency unrelated to your organization, the chats/content from that meeting are primarily stored in the external agency's tenant. Microsoft Teams treats external meetings as separate entities, and the data associated with those meetings is typically stored within the host organization's infrastructure.

As for your own organization's Exchange Online (EXO), by default, the chats and content from external meetings are not stored in a hidden folder or location accessible by compliance/ediscovery search in your organization's EXO. Microsoft Teams doesn't automatically replicate or store external meeting data in your organization's infrastructure unless there are specific arrangements or policies in place to capture and retain that information.