Office 365 Connectors are used to bring information from network sources into Office 365 Groups, Teams, and other apps. Microsoft retired the Facebook connector on September 4, so that’s one network source that won’t be used as a conversation starter in the future. Microsoft’s telemetry says that the Facebook connector isn’t used much, except by us (of course).
https://office365itpros.com/2019/09/06/demise-office-365-facebook-connector/
