What's "GeForce Experience", "Wireless Controller" and "ShadowPlay services"? Do recent drivers always include the latter? How do I check for them? Are they ke

What's "GeForce Experience", "Wireless Controller" and "ShadowPlay services"? Do recent drivers always include the latter? How do I check for them? Are they kernel modules? In my case, all the nvidia drivers I see loaded are: $ lsmod | grep nv nvidia_drm 20480 1 drm 294912 3 nvidia_drm nvidia_uvm 704512 0 nvidia_modeset 770048 3 nvidia_drm nvidia 11866112 42 nvidia_modeset,nvidia_uvm