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Answer: Utilize Amazon EventBridge with a rate expression for 15-minute intervals, targeting the Lambda function.
The correct answer is A. Amazon EventBridge, formerly known as CloudWatch Events, allows you to set up a rule with a specific schedule using cron or rate expressions. By using a rate expression of rate(15 minutes), EventBridge can directly target a Lambda function, making it a straightforward and low-effort solution to execute the function at regular intervals. This approach requires the least development effort compared to other options, which involve additional configuration or management of EC2 instances.
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In a serverless AWS application, how can a developer efficiently schedule a Lambda function to calculate and store order success rates in a DynamoDB table every 15 minutes with minimal development effort?
A
Utilize Amazon EventBridge with a rate expression for 15-minute intervals, targeting the Lambda function.
B
Employ AWS Systems Manager to run a script on EC2 via Run Command every 15 minutes to invoke the Lambda function.
C
Configure an AWS Step Functions state machine with a 15-minute Wait state to periodically invoke the Lambda function.
D
Deploy an EC2 instance and use a cron job to trigger the Lambda function every 15 minutes.