In case you missed it, Skype for Business Online is no longer included in Office 365 for new customers. Instead, Microsoft Teams is now the primary client for meetings and calling in Office 365.
Currently, Microsoft Teams is a separate installation from Office 365 Business. But, starting in January 2019, Teams will be installed by default for new installations of Office 365 Business, starting with Version 1901. #O365 #MSTeamshttps://t.co/8Rqqc1eun1
— Per Larsen [MVP] (@PerLarsen1975) January 5, 2019