HTTP/3 or H3 is the third major version of the Hypertext Transfer Protocol used to exchange binary information on the World Wide Web. HTTP/3 is a draft based on a previous RFC draft, then named "Hypertext Transfer Protocol (HTTP) over QUIC". QUIC is a transport layer network protocol initially developed by Google where userspace congestion control is used over User Datagram Protocol (UDP).
This feature is the future of the internet itself. I think if Runcloud will be the one of few who implement this feature first, it will be awesome.