* The bucket name and object name are extracted from the URL.
 * </p>
 *
 * <p>
 * The handler relies on environment variables for configuration:
 * </p>
 * <ul>
 *   <li>{@code S3_ENDPOINT}: The endpoint URL of the S3 service.</li>
 *   <li>{@code S3_ACCESS_KEY}: The access key for authentication.</li>
 *   <li>{@code S3_SECRET_KEY}: The secret key for authentication.</li>