What does HTTP primarily do?

HTTP, which stands for Hypertext Transfer Protocol, is a foundational protocol used for transferring data on the World Wide Web. Its primary function is to facilitate the retrieval of content from web servers. When a user enters a URL in their web browser, HTTP is the protocol that defines how messages are formatted and transmitted, as well as how web servers respond to those requests.

When a browser sends an HTTP request to a web server, it is effectively asking the server to send back the requested resources, such as HTML files, images, or other types of data that make up a website. The server processes this request and sends back the appropriate resources using the same protocol, allowing the browser to display the content to the user.

Understanding this function is essential because it underscores the role of HTTP in enabling web browsing and accessing information online. It is the key mechanism by which users interact with websites, making it a critical element of web technology.