What is the main task of the HTTP protocol when working with web applications?

The main task of the HTTP protocol when working with web applications is to provide a standardized way of exchanging data between the client (e.g., a browser) and the server. HTTP defines how requests and responses are formed, which methods are used (GET, POST, PUT, DELETE, etc.), and how headers and message bodies are transmitted. This allows web applications to request resources, send data, and receive results in a clear and predictable format.