Like the title says HTTP is the abbreviation of (HyperText Transfer Protocol)
And the main function of the HTTP protocol is to establish a connection to the server and send HTML pages back to the user’s browser.
And it is also used to download files from the server, either to the browser or to any other application that requests to use HTTP.
All web pages are written in the language of Hypertext or (HTML), so hypertext is the content of web pages. Most of the resources are files (images, etc.) but you can include other types of data such as scripts.
And HiperText Transfer Protocol uses Port 80, which is the port from which the web server accepts requests.
There is a more secure version of HTTP known as HTTPS. This involves the use of an SSL certificate that creates a secure and encrypted connection between the browser and the web server.
It is typically used in areas of websites where sensitive data such as payment details or login credentials are transferred.
(While HTTP uses Port 80, HTTPS uses 443 for communication.)
So today, many of the URL addresses require the inclusion of the “http: //” protocol for their correct operation.
This protocol is usually followed by the subdomain “www” and then by the specific address or domain of the website you want to visit.
More info. https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol
