Q. If I'm not using a Microsoft Virtual Desktop Infrastructure (VDI) solution for my VDI, do I still need Windows Virtual Desktop Access (VDA) or Software Assurance to access the Windows OS?

A. Yes. Remember that the benefit of Windows VDA or Software Assurance for virtual desktop access is to give the device access to a virtualized Windows client OS. It's not licensing for the actual VDI infrastructure. No matter which VDI solution you use, if you're accessing a Windows client OS in a VDI environment, the connecting device needs Windows VDA or must be covered by Software Assurance.