HTTP QUIC is an enhancement on the transport protocol layer between http clients and servers, and offers much lower latency.
As such, it provides a more seamless consumption of web services on high-speed low latency networks (e.g. 5G and faster).
QUIC is based on UDP (rather than TCP) and provides flow control (i.e. to initiate retransmission of missing packets) on the QUIC level, as UDP does not provide that.
Lower latency is achieved by a combination of UDP and by embedding the TLS negotiation into the QUIC protocol.
QUIC was first drafted in 2015 and has been confirmed an IETF internet standard by May 2021 in RFC 9000.
[Toni Feric, Belsoft Collaboration]