Which actions are examples of a company’s effort to rightsize its AWS resources to control cloud costs?
(Choose two.)
Switch from Amazon RDS to Amazon DynamoDB to accommodate NoSQL datasets.
Base the selection of Amazon EC2 instance types on past utilization patterns.
Use Amazon S3 Lifecycle policies to move objects that users access infrequently to lower-cost storage tiers.
Use Multi-AZ deployments for Amazon RDS.
Replace existing Amazon EC2 instances with AWS Elastic Beanstalk.
Explanations:
Switching from Amazon RDS to Amazon DynamoDB may be beneficial for specific use cases (like NoSQL), but it does not directly address rightsizing AWS resources or controlling costs across general cloud usage.
Basing the selection of Amazon EC2 instance types on past utilization patterns helps ensure that the company is using instances that match its actual needs, avoiding over-provisioning and thus controlling costs effectively.
Using Amazon S3 Lifecycle policies to transition infrequently accessed objects to lower-cost storage tiers is a direct action to manage and reduce cloud costs, optimizing storage expenses.
While Multi-AZ deployments provide high availability and durability for Amazon RDS, they also increase costs significantly, and do not contribute to rightsizing efforts.
Replacing existing EC2 instances with AWS Elastic Beanstalk does not inherently optimize costs; it may simplify management but could lead to either increased or decreased costs depending on the implementation.
In my experience, the answer is:
Base the selection of Amazon EC2 instance types on past utilization patterns.