Skype for Business, Client Feature Comparison

Not all versions of the Skype for Business client support the same features.

This web page has a detailed comparison of the capabilities of the Windows and MacOS Skype for Business clients:

https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/clients-and-devices/desktop-feature-comparison

This web page compares the mobile editions of Skype for Business (Android and iOS)  to the Windows client:

https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/clients-and-devices/mobile-feature-comparison