Its just a dock, so no.

It works with most laptops running Linux, but its still just a dock. That gigabit port is just a usb-c/thunderbolt device, it is not a full machine. Same with the video, its just DP alt mode, there is no GPU in there.

If you want a small form factor machine to use a server, look for a used tiny/mini/micro workstation.

Are you thinking of live captions?

Annotation is on the sharing toolbar (full screen share only, not a window only share).

Admins, to be clear.