A server response is the information sent back from a server to a client after a request is made. This process typically occurs in web applications, where a user's browser requests data from a web server. The server processes the request and sends back a response, which can include HTML, JSON, or other data formats. Server responses include status codes that indicate the result of the request. For example, a 200 OK status means the request was successful, while a 404 Not Found status indicates that the requested resource could not be found. These codes help clients understand the outcome of their requests.