Useless... Being generous
This app in its current state is basically useless. Push notifications are non existent. The only way to know if you have a pending message is to actually open the app. Useless if you ask me, might as well just use email. At least then you get a notification. If they can fix the notification issue, then this would be a great product but until then, nah.
DevX2K about
Skype for Business, v6.1.304