SAP-C02 Question 464
Select 3A company is hosting a critical customer-facing application on AWS and has a strict uptime requirement of 99.9% as part of their Service Level Agreement (SLA). They also need to monitor Key Performance Indicators (KPIs) such as response time, error rate, and request throughput. As the Solutions Architect, which combination of services and configurations should you recommend to meet these requirements?
- A
Deploy the application across multiple Availability Zones using an Auto Scaling group and an Application Load Balancer.
- B
Use Amazon CloudWatch Alarms to monitor KPIs and trigger automated recovery actions when thresholds are breached.
- C
Enable Multi-Region deployment and use Amazon Route 53 with latency-based routing for failover.
- D
Store application logs in Amazon S3 and analyze them using Amazon Athena to identify performance bottlenecks.
- E
Use Amazon EC2 Spot Instances for cost savings and apply scaling policies to manage capacity fluctuations.
Show answer and explanation
Correct answers: A, B, C
Explanation
To meet the SLA of 99.9% uptime and monitor KPIs effectively, it is essential to design a highly available and resilient architecture. Deploying across multiple Availability Zones ensures fault tolerance, while Multi-Region deployment with Route 53 latency-based routing provides failover capabilities. Amazon CloudWatch Alarms enable KPI monitoring and automated recovery actions. While analyzing logs in S3 and using Spot Instances might have other benefits, they do not directly address the SLA or KPI monitoring requirements.
- A. Correct.
Deploying the application across multiple Availability Zones with an Auto Scaling group and Application Load Balancer ensures high availability and fault tolerance, which is critical to meeting a 99.9% SLA.
- B. Correct.
Amazon CloudWatch Alarms allow you to actively monitor KPIs like response time, error rate, and throughput, and trigger automated recovery actions to maintain performance and availability.
- C. Correct.
Multi-Region deployment with Amazon Route 53 latency-based routing provides a robust failover mechanism and improves application availability, further supporting the SLA requirements.
- D. Incorrect.
While storing logs in Amazon S3 and analyzing them with Athena can help identify performance bottlenecks, it does not directly contribute to meeting the SLA or monitoring real-time KPIs.
- E. Incorrect.
Using Amazon EC2 Spot Instances can save costs, but they are not suitable for critical applications requiring high availability, as Spot Instances can be interrupted with little notice.