Part of a URL introduced by a question mark, used to pass parameters such as a filter or page number. Characters need correct encoding, and names may repeat. These values can appear in history or logs; they are not secret fields.
Secure transport protocol built over UDP, supporting multiple streams in one connection and transport control mechanisms. HTTP/3 uses it as its foundation. Adoption does not guarantee a faster website in every case: network, server, browser and page resources affect the observed result.
In practice: record the protocol actually negotiated and compare the same journey under documented network conditions. Also check access when that transport is unavailable; enabling a server option does not establish use by every visitor.
Definitions written for people, structured for machines.
The entries are editorially reformulated in plain language, connected to stable URLs and represented with DefinedTerm structured data. They provide orientation, not a substitute for official standards, legal advice or vendor documentation.