Using Teams for Coworking Spaces vs Slack

Hi,

For Teams there is no guest license or restriction how many guests you can invite per user. But there is a limit for Azure AD premium services, and that limit is 1:5. So if you have 10 Azure AD Premium P1 licenses you will be able to invite 50 guests using features included in the Azure AD Premium P1 license, like MFA.

https://docs.microsoft.com/en-us/microsoftteams/manage-guests#guest-access-licensing-limits

And I recommend that you require your guests to use MFA and that is an Azure AD Premium P1 feature you need to consider licenses. So you could buy a couple of extra licenses that you don't assign to any users, since there is actually no hard limit for this.

https://docs.microsoft.com/en-gb/azure/active-directory/b2b/licensing-guidance#examples-calculating-guest-user-licenses