# QUIC Protocol
Status: public
Confidence: medium (0.835) (verified)
Last verified: 2026-05-30
Generation: human_only


## TL;DR

QUIC is a secure transport protocol built on UDP. It provides multiplexed streams, flow control, low-latency connection setup, and the transport foundation used by HTTP/3.

## Core Explanation

QUIC moves several transport responsibilities into an encrypted UDP-based protocol. Its stream model lets independent streams share one connection while retaining separate flow control.

The protocol is secured with TLS as specified for QUIC, and HTTP/3 maps HTTP semantics onto QUIC rather than onto TCP. That makes QUIC especially important for agents and applications that need to understand modern web transport behavior.

## Further Reading

- [RFC 9000: QUIC: A UDP-Based Multiplexed and Secure Transport](https://www.ietf.org/rfc/rfc9000.html)
- [RFC 9001: Using TLS to Secure QUIC](https://www.ietf.org/rfc/rfc9001.html)
- [RFC 9114: HTTP/3](https://www.ietf.org/rfc/rfc9114.html)

## Related Articles

- [HTTP/3: QUIC Protocol and Next-Generation Web Transport](../http-3-quic-protocol-and-next-generation-web-transport.md)
- [Hypertext Transfer Protocol (HTTP)](../http-protocol.md)
- [gRPC](../grpc.md)