Do I use VIVE Streaming Hub or VIVE Business Streaming for pairing with Unity?

[Giantbean]

I'm trying to develop on the Focus 3 and XR Elite, but I don't know what software is needed to connect to Unity with a VIVE USB C cable.
Please advise.

Also Do I need VIVE's OpenXR or can I use Unity's existing OpenXR manager and tools. I understand WAVE may be needed for Passthrough but without that is this Installing VIVE OpenXR PC VR Plugin - Developer Resources needed? 

[C.T.]

VBS will be better for development.
You will still need to import VIVE OpenXR to the unity for controller profiles. Depends on the platform you would like to deploy your content, https://developer.vive.com/resources/openxr/openxr-mobile/ is needed for contents on XR Elite/Focus 3.