Xbox has enabled Geforce Now on it’s website at xbox.com. Of course, you still need a Geforce Now account for it, but at least now, you can use it on Xbox.com website. Not sure who will need this service, but I guess it’s there if anyone wants to use it. Yes, it still needs to be a cloud service type thing, so, your experience may vary. Are you going to be trying out Geforce Now on Xbox.com website? Let me know in the comments below.

https://support.xbox.com/en-US/help/games-apps/cloud-gaming/cloud-gaming-on-third-party-services?ocid=Evergreen_soc_omc_xbo_tw_Photo_lrn_7.17.2