Какое значение имеют коды состояния в протоколах передачи данных?

Status codes in data transfer protocols, such as HTTP, serve to inform the client about the result of the server's processing of a request. They help understand whether the operation was successful, an error occurred, or additional action is required.

For example, code 200 indicates a successful request, 404 means resource not found, and 500 indicates an internal server error. This allows the client to respond appropriately to different situations without needing to analyze the response body.