Since Microsoft dubbed Teams heir apparent to the UC throne, we've been in an awkward interim period in which the app's Phone System add-on has one set of telephony call features, Skype for Business ...

When thinking about enterprise communications in the cloud, Microsoft Office 365 with the Teams Phone System will almost certainly be on the vendor list. For one reason, Office 365 has broad adoption.

Microsoft is expanding the capabilities of Teams Phone with a new extensibility preview that allows organizations to build and integrate custom call workflows using Azure Communication Services (ACS).