In reality, your IT admins have control of a GPO/registry key that will declare whether your client should be called "Lync" or "Skype for Business" when you lau

In reality, your IT admins have control of a GPO/registry key that will declare whether your client should be called "Lync" or "Skype for Business" when you launch it. In typical Microsoft wisdom, I guess they provided this to prevent too much culture shock in the transition. You're using the Skype for Business client with the "Lync" skin.