eerstech - For customers of Skype for Business Online, organizations will need to move to Teams at some point (with timing under their control), but for customers of Skype for Business Server (on premises), there is no plan to force anyone to move to Teams. We will continue to support Skype for Business for the foreseeable future. Interoperability between Teams and Skype for Business is a critical feature that we support today and continue to enhance. This is important both within an organization (as migration to Teams may happen in stages) and between organizations. The switch from Skype Meetings App to SfB desktop app on Mac is part of this support. We can provide a better and more reliable experience for people who need to join SfB meetings, even if they are not using SfB as their daily communications apps.
Phil.