Exam AWS Certified Cloud Practitioner CLF-C02 topic 1 question 687 discussion

I have personally asked a L6 in Amazon about this question. Here is his answer: Performance pillar is optimised for making sure things work perfectly irrespective of cost so B. A is more about cost efficiency. Also serverless has some limitations like size of request has to be very small, max number of requests per second (throttling) - so balancing performance for cost- so A doesn’t seem like it.

we are talking about performances: Performance Efficiency focuses on using IT and computing resources efficiently to meet system requirements, scaling to meet demand, and optimizing performance. Scaling horizontally (adding more instances or resources) is a key way to improve performance and handle increased load efficiently.

b. Scaling horizontally

Design Principles • Democratize advanced technologies - Advance technologies become services and hence you can focus more on product development • Go global in minutes - Easy deployment in multiple regions • Use serverless architectures - Avoid burden of managing servers • Experiment more often - Easy to carry out comparative testing • Mechanical sympathy - Be aware of all AWS services

Both A & B are correct answers. Leaning more towards A since Scaling horizontally (Option B) is also crucial but is more about handling increased load efficiently rather than optimizing resource usage per se. Both are important, but serverless architectures can offer more direct benefits in terms of performance efficiency by automatically managing resource allocation.

According https://aws.amazon.com/blogs/apn/the-6-pillars-of-the-aws-well-architected-framework correct answer is A because: There are five design principles for performance efficiency in the cloud: -Democratize advanced technologies -Go global in minutes -Use serverless architectures -Experiment more often -Consider mechanical sympathy AND Scale horizontally to increase aggregate workload availability - is part of the principles for reliability in the cloud.

Horizontal scaling ensures performance by adding more resources, such as EC2 instances or containers, as needed to handle increased traffic or workload demands. That goes with the Performance Efficiency pillar of the AWS Well-Architected Framework which focuses on designing systems that can scale to meet changing demand while maintaining high performance.

A. Using serverless architectures

Performance Efficiency: Opt for serverless architectures, explore multi-region deployments, delegate tasks to cloud vendors, and experiment with virtual resources

Performance efficiency is the ability to use computing resources efficiently to meet system requirements and to maintain that efficiency as demand changes and technologies evolve. Evaluating the performance efficiency of your architecture includes experimenting more often, using serverless architectures, and designing systems to be able to go global in minutes.

Automatically recover from failure Test recovery procedures Scale horizontally to increase aggregate workload availability Stop guessing capacity Manage change through automation:

Horizontal scaling involves adding more instances or servers to distribute the load, which aligns with the Performance Efficiency pillar.

https://docs.aws.amazon.com/wellarchitected/latest/performance-efficiency-pillar/design-principles.html

The correct answer is B. Scaling horizontally. The performance efficiency pillar of the AWS Well-Architected Framework emphasizes designing systems that can scale horizontally to handle increased load, which helps maintain performance and efficiency.

B definitely

B by Chatjpt

Answer is A