A. Update the Lambda function code to extract the AWS principal from the Lambda context and to write a log entry when the function to be monitored is invoked.
B. Use Amazon EventBridge (Amazon CloudWatch Events) to configure a rule and custom pattern for lambda:invoke events with a filter on the functions to monitor. Invoke another Lambda function to write the EventBridge (CloudWatch Events) data to Amazon CloudWatch Logs.
C. Modify the existing CloudTrail trail. Configure the existing CloudTrail trail to monitor Lambda functions as data events. Most Voted
D. Create a Lambda layer that provides CloudTrail with a log event that includes the Lambda context when the function is invoked. Attach this layer to all Lambda functions that must be monitored.