}

        final String lowerEndpoint = endpoint.toLowerCase(Locale.ROOT);

        // GCS patterns
        if (lowerEndpoint.contains("storage.googleapis.com") || lowerEndpoint.contains(".storage.cloud.google.com")) {
            return StorageType.GCS;
        }

        // S3 patterns
        if (lowerEndpoint.contains(".amazonaws.com") || lowerEndpoint.contains("s3.") || lowerEndpoint.contains("s3-")) {