External guest in Teams

astexas Hi Amy, sometimes (at least from my point of view) things makes more sense when reading about it yourself. So I'm attaching a couple of links that explains the external vs guest scenarios well. No heavy reading and should only take a couple of minutes.

Guest access in Microsoft Teams
https://docs.microsoft.com/en-us/microsoftteams/guest-access 

Manage external access in Microsoft Teams
https://docs.microsoft.com/en-us/microsoftteams/manage-external-access 

Communicate with users from other organizations in Microsoft Teams
https://docs.microsoft.com/en-us/microsoftteams/communicate-with-users-from-other-organizations#compare-external-and-guest-access 

Add a guest to a team

https://docs.microsoft.com/en-us/microsoftteams/add-guests