Additional features, settings, or issues not covered by specific Microsoft Teams categories
Hi AdrianMurariu,
Microsoft released Teams free org - free version with limited functionalities. Depends on your organization Teams settings, you can add and assign with this free license.
Regarding differences between Teams and Teams free, please check the article https://support.office.com/en-us/article/differences-between-microsoft-teams-and-microsoft-teams-free-0b69cf39-eb52-49af-b255-60d46fdf8a9c.
In order to manage external access, please refer to this official article - https://support.office.com/en-us/article/differences-between-microsoft-teams-and-microsoft-teams-free-0b69cf39-eb52-49af-b255-60d46fdf8a9c.
However, please keep in mind that guest access can also be configured very similar as external access so I'd like to suggest you to inform more about Guest access in Microsoft Teams.
Please let me know if you have further questions or if I can help you with further settings.
Best regards,
Nemanja