You need to insert a record into a DynamoDB table immediately after a new file is added to an S3 bucket. Which sequence of steps accomplishes this?

Configuring an S3 event notification to invoke a Lambda function is the most efficient and real-time solution. S3 event notifications directly trigger a Lambda function whenever a new object is created, allowing for immediate insertion into DynamoDB. An EventBridge rule for S3 is not the most direct or common pattern for this specific real-time S3-to-DynamoDB integration. While EventBridge can integrate with S3, S3 event notifications are purpose-built for this use case. A Lambda function polling S3 would be inefficient and incur unnecessary costs, as it would constantly check for new objects even when none exist, and it wouldn't be immediate. A scheduled cron job is not suitable for immediate insertion; it would introduce a delay between the S3 upload and the DynamoDB record creation.