What groups of status codes do you know? Describe the groups and their meanings.

HTTP status codes are divided into five groups based on the first digit:

1xx — Informational: indicate that the request has been received and is being processed (e.g., 100 Continue).

2xx — Success: the request was successfully processed (e.g., 200 OK, 201 Created).

3xx — Redirection: the client must take additional actions to complete the request (e.g., 301 Moved Permanently, 302 Found).

4xx — Client errors: the request contains an error or cannot be fulfilled due to client actions (e.g., 400 Bad Request, 404 Not Found).

5xx — Server errors: the server failed to fulfill a valid request due to internal problems (e.g., 500 Internal Server Error, 503 Service Unavailable).