Facts about HTTP Version 3

1. 06

   Mozilla Firefox enabled HTTP/3 support by default in version 109 released in January 2023, joining other major browsers in widespread adoption of the protocol.

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2. 05

   UDP transport underlying HTTP/3 reduces latency by approximately 25 percent compared to HTTP/2's TCP dependency on high-latency networks with packet loss.

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3. 04

   Google Chrome achieved 95 percent adoption of HTTP/3 by 2023, making it the browser leader in deploying the standard across its user base.

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4. 03

   Connection migration in HTTP/3 allows clients to seamlessly switch between WiFi and cellular networks without dropping their active sessions, a capability absent in HTTP/2.

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5. 02

   Multiplexing in HTTP/3 allows hundreds of concurrent streams over a single connection without head-of-line blocking, dramatically improving performance for websites with numerous resources.

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6. 01

   QUIC protocol underpinning HTTP/3 was standardized by the IETF in RFC 9000 during May 2021, enabling faster connection establishment through zero round-trip time handshakes.

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