HTTP (HyperText Transfer Protocol) is a networking protocol used to transmit data on the web. It is the foundation of the modern web and is used to establish a connection between a web server and a web client, such as a web browser, and to transfer data between them.
When you enter a website’s URL into your web browser, the browser sends an HTTP request to the web server to retrieve the webpage. The server then responds with an HTTP response, which includes the requested webpage and other information, such as the HTTP status code.
HTTP status codes are used to indicate the status of the request and the server’s response. Some common status codes include 200 OK, which indicates that the request was successful and the requested webpage was found; 404 Not Found, which indicates that the requested webpage was not found on the server; and 500 Internal Server Error, which indicates that there was an error on the server.
HTTP is a stateless protocol, which means that it does not store any information about previous requests or responses. This allows it to scale to a large number of clients and servers, but it also means that additional technologies, such as cookies, are needed to maintain state or to track user activity across multiple requests.
Overall, HTTP is an essential part of the modern web and is used to establish connections and transfer data between web clients and servers. It is a simple but powerful protocol that has played a crucial role in the growth and development of the internet.