A sysops administrator has an AWS Lambda function that performs maintenance on various AWS resources. This function must be run nightly. Which is the MOST cost-effective solution?
A.
Launch a single t2.nano Amazon EC2 instance and create a Linux cron job to invoke the Lambda function at the same time every night.
B.
Set up an Amazon CloudWatch metrics alarm to invoke the Lambda function at the same time every night.
C.
Schedule an Amazon EventBridge (Amazon CloudWatch Events) rule to invoke the Lambda function at the same time every night.
D.
Implement a Chef recipe in AWS OpsWorks stack to invoke the Lambda function at the same time every night.
Option C allows you to schedule an Amazon EventBridge (formerly known as Amazon CloudWatch Events) rule to invoke the Lambda function at the specified time every night.
Ans: C
https://docs.aws.amazon.com/lambda/latest/dg/services-cloudwatchevents.html
https://aws.amazon.com/premiumsupport/knowledge-center/start-stop-lambda-cloudwatch/
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