Learn about cost efficiency principles for the AWS Certified Cloud Practitioner CLF-C02 exam. Discover why “properly sizing services based on capacity needs” is essential for AWS cost optimization.
Table of Contents
Question
What is a cost efficiency principle related to the AWS cloud?
A. Properly size services based on capacity needs
B. Use the Billing Dashboard to access monthly account information
C. Use AWS Organizations to combine the expenses of multiple accounts into a single invoice
D. Tag all AWS resources
Answer
A. Properly size services based on capacity needs
Explanation
One of the cost efficiency principles related to the AWS cloud is to properly size services based on capacity needs. This means choosing the most appropriate type and size of AWS resources to meet the performance and scalability requirements of applications, avoiding over-provisioning or under-provisioning.
The principle of “properly sizing services based on capacity needs” directly aligns with the AWS Well-Architected Framework’s Cost Optimization Pillar. This principle emphasizes selecting the right-sized resources to match workload demands, which ensures efficient use of resources and minimizes unnecessary costs. Here’s why this is critical:
Rightsizing Resources
AWS offers various instance types and configurations (e.g., EC2, RDS) to match specific workload requirements. By analyzing performance and usage data, you can adjust resources to avoid over-provisioning or under-utilization, reducing waste and costs.
Dynamic Scaling
Services like AWS Auto Scaling allow you to automatically adjust resource capacity based on real-time demand. This ensures that you only pay for what you need, especially during fluctuating workloads.
Usage-Based Payment Model
AWS operates on a pay-as-you-go model, meaning you are charged only for what you use. Properly sizing services ensures that your consumption matches your business needs, optimizing cost efficiency.
Why Other Options Are Incorrect
B. Use the Billing Dashboard to access monthly account information: While the Billing Dashboard provides visibility into costs, it is a monitoring tool, not a principle for achieving cost efficiency.
C. Use AWS Organizations to combine the expenses of multiple accounts into a single invoice: Consolidated billing simplifies management but does not directly optimize resource usage or reduce costs.
D. Tag all AWS resources: Resource tagging helps with tracking and allocation but is not inherently a cost-saving measure.
By focusing on right-sizing and dynamic scaling, organizations can significantly reduce their cloud expenditures while maintaining optimal performance. This principle is foundational for anyone preparing for the AWS Certified Cloud Practitioner CLF-C02 exam.
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