AWS CloudWatch提供了一个Webhook或API，可以用来向其他系统发送监控告警。以下是一个使用Python编写的示例代码：

import requests
import json

def send_alarm_to_webhook(alarm):
    # 构建Webhook的URL
    webhook_url = "https://your-webhook-url"
    
    # 构建要发送的数据
    data = {
        "alarm_name": alarm['AlarmName'],
        "alarm_description": alarm['AlarmDescription'],
        "new_state_value": alarm['NewStateValue'],
        "new_state_reason": alarm['NewStateReason'],
        "state_change_time": alarm['StateChangeTime']
    }
    
    # 发送POST请求到Webhook URL
    response = requests.post(webhook_url, data=json.dumps(data))
    
    if response.status_code == 200:
        print("Alarm sent successfully to webhook")
    else:
        print("Failed to send alarm to webhook")

# 从CloudWatch获取最新的告警
def get_latest_alarm():
    # 构建CloudWatch API的URL
    api_url = "https://monitoring.eu-west-1.amazonaws.com"
    
    # 构建要发送的请求参数
    params = {
        "Action": "DescribeAlarms",
        "Version": "2010-08-01",
        "MaxRecords": 1
    }
    
    # 发送GET请求到CloudWatch API
    response = requests.get(api_url, params=params)
    
    if response.status_code == 200:
        # 解析API响应
        response_data = json.loads(response.text)
        alarm = response_data['DescribeAlarmsResponse']['DescribeAlarmsResult']['MetricAlarms'][0]
        return alarm
    else:
        print("Failed to get latest alarm from CloudWatch")
        return None

# 主函数
def main():
    alarm = get_latest_alarm()
    
    if alarm is not None:
        send_alarm_to_webhook(alarm)

if __name__ == "__main__":
    main()

在上面的示例代码中，send_alarm_to_webhook函数用于将告警数据发送到Webhook URL。get_latest_alarm函数用于从CloudWatch获取最新的告警。主函数main用于获取最新的告警并发送到Webhook。你需要将示例代码中的your-webhook-url替换为你自己的Webhook URL，并确保你已经安装了Python的requests库。

请注意，这只是一个示例，你需要根据实际情况进行适当的修改和调整。