Explanation:
AWS Systems Manager Run Command includes a 'Rate Control' feature specifically designed for this scenario. It allows you to define 'Concurrency' (either as a fixed number or a percentage) to control how many instances receive the command simultaneously. By setting the concurrency to 30 and targeting instances by their user-defined tag, the CloudOps engineer can ensure the private repository is not overwhelmed. This is the most operationally efficient method because it uses native SSM features without requiring manual batching, custom Lambda functions, or Step Functions orchestration.
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Question #11 A company runs a business application on more than 300 Linux-based instances. Each instance has the AWS Systems Manager Agent (SSM Agent) installed. The company expects the number of instances to grow in the future. All business application instances have the same user-defined tag. A CloudOps engineer wants to run a command on all the business application instances to download and install a package from a private repository. To avoid overwhelming the repository, the CloudOps engineer wants to ensure that no more than 30 downloads occur at one time. Which solution will meet this requirement in the MOST operationally efficient way?
A
Use a secondary tag to create 10 batches of 30 instances each. Use a Systems Manager Run Command document to download and install the package. Specify the target as part of the Run Command document by using the secondary tag. Run each batch one time.
B
Use an AWS Lambda function to automatically run a Systems Manager Run Command document that reads a list of instance IDs that have the user-defined tag. Set reserved concurrency for the Lambda function to 30.
C
Use a Systems Manager Run Command document to download and install the package. Use rate control to set concurrency to 30. Specify the target by using the user-defined tag as part of the Run Command document.
D
Use a parallel workflow state in AWS Step Functions to automatically run a Systems Manager Run Command document that reads a list of instance IDs that have the user-defined tag. Set the number of parallel states to 30. Run the Step Functions workflow 10 times.
E
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F
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