Teams Phone
Microsoft's calling capability that turns Teams into a business phone system with real phone numbers.
The licence provides the phone system; actual calling minutes come separately through a Microsoft calling plan or a third-party carrier connection known as Direct Routing.
For businesses already standardized on Teams it consolidates a separate phone bill and vendor, though call routing, emergency location handling, and porting are real project work rather than a switch to flip.
Where this comes up
Teams Phone sits inside our microsoft 365 and cloud work. If you are trying to work out what this means for your own environment rather than in the abstract, that is the page worth reading next, and a short call will get you a straight answer faster than either.