This site is a reference for the HyperText-Transfer Protocol (HTTP)
HTTP is the foundation for communication on the World Wide Web. The development of the protocol was initiated by Sir Tim Berners Lee in 1989 at CERN. Three version (HTTP/1. HTTP/2 and HTTP/3) exists. HTTP/1 is no longer widespread and adoption is moving towards HTTP/3 whereas HTTP/2 is virtually supported by all browsers at this point. HTTP/3 uses UDP instead of TCP for the underlying transport protocol. HTTP/3 is enabled by default on the latest MacOS releases and can be enabled in stable versions of Chrome and Firefox.