We are upgrading from Lync to Skype 2015.
Currently we are running client Lync 2013 version 15.0.4569.1506 on user's machines. I am wondering what the minimum version is required for S4B 2015 to determine if we will need to add this to the project.
I haven't been able to find any documentation on this, so if anyone is able to locate something official from Microsoft I will be highly indebted.