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Which AWS feature lets a Lambda function fire automatically when a new object lands in an S3 bucket — useful for log processing or media transcoding pipelines?
AManually polling the bucket every minute
BAWS Snowball
CAmazon RDS triggers
DAmazon S3 Event Notifications (to Lambda, SQS, SNS, or EventBridge)
Answer & Solution
Correct answer: D. Amazon S3 Event Notifications (to Lambda, SQS, SNS, or EventBridge)
S3 Event Notifications are the canonical S3-triggered automation pattern (per DOP-C02 §4.3). Polling wastes compute; RDS triggers are intra-DB; Snowball is offline.
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