You may already know it has been possible to invite external users to your Microsoft Teams but this was limited to corporate account – meaning external users with Office 365 account.
Now, this has been finally extended to allow you to invite also external users with Microsoft Account.
NOTE please note the updated feature is being rolled out with an estimated completion date at the end of March.
Off course, this means you already have enable Guest access from your Office 365 Admin portal (Settings\Services & add-ins\Microsoft Teams and turn on the Guest access)
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