以前要記錄行為會透過 AWS Lambda 轉丟到其他帳號下記錄，有一堆眉眉角角的東西要注意，現在則是直接支援了：「New – Cross-Account Delivery of CloudWatch Events」。
文章裡有提到兩種用途，其中一種就是做安全性的記錄：
Separation of Concerns – Customers would like to handle and respond to events in a separate account in order to implement advanced security schemes.
另外一種則是為了將記錄丟到同一個地方：
Rollup – Customers are using AWS Organizations and would like to track certain types of events across the entire organization, across a multitude of AWS accounts.
價錢看起來沒什麼問題，每一百萬次收 USD$1：
Events forwarded from one account to another are considered custom events. The sending account is charged $1 for every million events (see the CloudWatch Pricing page for more info).