Hi there @3nigma 

So you can use AWS CloudTrail for monitoring API activity within your AWS account. Create a CloudTrail trail to capture API events related to FSx for NetApp ONTAP, and then use AWS Lambda to process these events and trigger discovery activities in ServiceNow. While there isn't a specific ServiceNow Discovery Pattern for FSx ONTAP, you can customize discovery.

1. AWS CloudWatch Events to monitor changes in the state of FSx for NetApp ONTAP clusters. You can configure CloudWatch Event Rules to trigger AWS Lambda functions whenever a relevant change event occurs, such as creation, modification, or deletion of FSx clusters. 

2.  For updating the CMDB in ServiceNow, consider using ServiceNow APIs to programmatically interact with CMDB tables. From your Lambda function, make API calls to ServiceNow to update CMDB records based on the detected changes in AWS. 

3. and to maintain data integrity and avoid duplicates , implement validation checks within your Lambda function before updating CMDB records. 

If this helps kindly accept the response thanks much.

Regards

Azar