Google Analytics 4 is the new version of Google Analytics by Google. Previously known as Google Analytics Universal, since 2020 Google is now recommending Google Analytics 4 as the defacto solution for website analytics.

The Hypertext Transfer Protocol (HTTP) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems.[1] HTTP is the foundation of data communication for the World Wide Web, where hypertext documents include hyperlinks to other resources that the user can easily access, for example by a mouse click or by tapping the screen in a web browser.