Teams are a feature which are similar to Groups, in that it governs visibility of something within Studio.
Formerly we referred to Groups as “Edition Groups”, or “Edition Tags”. The change to “Groups” is a change of name only – the functionality remains identical. Actually the terms for Team and Group can be configured, in case other terms are more intuitive. Some people prefer the word “Class” rather than “Group” for instance, and/or “Group” rather than “Team”.
The point is, a Group, as it is currently called, can be assigned to a user, and/or to a document; any document with a given Group tag is considered to be “shared with” which just means “visible on the dashboard of” any user who has that same Group tag on his/her account.
A Team, on the other hand, only governs visibility of annotations. So within a class group, for example, smaller groups of students might share a Team tag, and be assigned to work together to annotate a given document with special attention to some theme, perhaps. The effect of this would be to have a somewhat separate workspace of sorts, where that smaller group can see only annotations by their team members, if/when they so choose, by using the Team filter in the sidebar.
In all cases (both for Group/Class/Edition tags and for Team tags), a given annotation is only visible to other users sharing those tags IF the author of the annotation checks the “My groups can view this annotation” box on the annotation editor for each annotation he/she wants to make visible. In that case, that annotation will be visible to members of one’s groups if the filter sidebar is set to show “Group” or “Team” visible annotations.