HTTP
HTTP stands for hypertext transfer protocol. In the Internet Protocol Suite (TCP/IP) it is an abstraction layer used for communicating directives between the header and the server. In this client-server model a browser may be the client making a request and a server or other device may be the response. The communication can be both ways where a directive in the server can make a request to the client. For greater clarification read more or talk to a network administrator. HTTP Development
Subsequent development has led to HTTP/2 and HTTP/3 versions. HTTP/3 uses QUIC which is a general-purpose transport layer protocol and has been adapted by Chrome, and Cloudflare and is also enabled in Firefox. Most of the efforts in developing HTTP have been at the behest of the IETF (Internet Engineering Task Force) and the World Wide Web Consortium (W3C). HTTP/2 is being used by 39% of the browsers. It is supported by major web servers and Transport Layer Security (TLS) a cryptographical security layer that is used in Email, Internet Messaging, etc. A cryptographical mechanism is also used in Digital Signatures.
As a request header, it can request the server such that the server can tailor the response. It is a directive placed in HTTP Header Section. A web browser is a user agent other agents are mobile apps, web crawlers, voice browsers, and many software.
HTTP is used to improve communication between the elements involved in the client-server model. Websites from heavy traffic benefit from web cache used to store heavy files like multimedia, video, photos, and graphics these are more beneficial in case of a hierarchy of servers or an upstream server. CDN is one example of an upstream server where a number of proxy servers are connected to the origin server.
HTTP resources are identified and located on the network by URLs. The uniform resource locators use Identifiers (URI’s) schemes http and https encoded as hyperlinks in HTML documents, so as to form interlinked hypertext documents.