The Lync VDI plug-in was developed for Lync 2013 and is compatible with either the Lync 2013 or Skype for Business 2015 client running on a virtual desktop. It's a stand-alone application that installs on the local computer and allows the use of local audio and video devices with a client on a virtual desktop. The plug-in does not require a Skype for Business client to be installed on the local computer or thin client, which must run Windows 7, Windows 8, or Windows Server 2008 operating systems. (Thin client devices using these operating systems and supported by Microsoft include: Dell Wyse Z90D7, Dell Wyse R90L7, Dell Wyse X90m7, HP t610 and HP t5740e.) This plug-in is still supported, but no future updates are planned. For Citrix-based virtual environments, the Citrix RealTime Optimization Pack is recommended.