Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 221 discussion

Actually, the right answer is to use Compute Optimizer, I don't understand why it was not part of the choices here https://aws.amazon.com/compute-optimizer/

AWS Cost Explorer provides resource optimization recommendations, including rightsizing EC2 instances based on historical usage data. These recommendations are generated for each account in the organization's management account, so you can obtain insights for all accounts centrally. Option A introduces complexity by requiring the company to install a third-party tool on all EC2 instances, and then manually develop and maintain a custom script for identifying underutilized instances. Option C would require you to retrieve recommendations separately for each account within the organization, increasing the administrative overhead compared to a centralized management approach. Option D, while using native AWS services for data collection, involves creating and maintaining additional AWS services, which is more complex than the straightforward combination of CloudWatch and AWS Cost Explorer.

Let's analyze each option based on effort: A. Marketplace tool: Effort: High Requires manual installation of a third-party tool on all instances. Needs custom script development to identify underutilized instances. Manual effort needed to reference pricing information for downsizing. B. Cost Explorer in Org Management Account: Effort: Low Leverages existing tools (CloudWatch agent & Cost Explorer) already available. Recommendations readily available in the management account. Downsizing options directly available within Cost Explorer.

Option B

IMO it could be done with either B or D. But the differentiator is "Least Effort" that makes it B

its a B

Though I vote B. No better choice. This is worst ques. How can cost explorer provide recommendations?. Its should be cost optimizer

Classic usage de Cloudwatch metrics and AWS Organization in master account . C not because more overhead each account for example 100 accounts. Note : Compute Optimizer is more apropiate in this case but no exist option

B. Install the Amazon CloudWatch agent on all the EC2 instances using AWS Systems Manager. Retrieve the resource optimization recommendations from AWS Cost Explorer in the organization's management account. Use the recommendations to downsize underutilized instances in all accounts of the organization. This solution leverages the capabilities of AWS CloudWatch and AWS Cost Explorer to monitor and analyze the CPU and memory usage of EC2 instances. By installing the CloudWatch agent, you can collect the necessary metrics for monitoring. AWS Cost Explorer provides resource optimization recommendations, which can be accessed from the organization's management account. These recommendations can then be used to identify underutilized instances and make informed decisions about downsizing. This solution requires minimal effort as it utilizes existing AWS services and tools, eliminating the need for additional installations or custom scripts. It also provides a centralized approach by retrieving recommendations from the organization's management account, allowing for efficient management of all accounts within the organization.

B. That's why you have the management account so you don't have to go to 1000+ accounts and get metrics.

B - Management account is the key word

B. the standard way AWS recommended