HTTP/3

Noun · Development

Definitions

  1. The third major version of HTTP, built on QUIC (UDP) instead of TCP. Eliminates TCP's head-of-line blocking — a lost packet in one stream doesn't stall other streams. Provides faster connection establishment (0-RTT), built-in encryption, and seamless connection migration (e.g., switching from Wi-Fi to cellular without reconnecting).

    In plain English: The newest version of HTTP that's built on QUIC instead of TCP, making web connections faster and more reliable on bad networks.

    Example: "HTTP/3 over QUIC means switching from WiFi to cellular doesn't drop the connection — the session migrates seamlessly."

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