AWS Certified Cloud Practitioner Practice Exam

Which AWS service is used for detecting, diagnosing, and remediating performance issues in your applications?

1. AWS X-Ray

2. Amazon EC2

3. AWS Lambda

4. Amazon S3

The correct answer is: AWS X-Ray

The correct answer is AWS X-Ray, which is designed specifically for analyzing and debugging applications, particularly those built using a microservices architecture. It allows developers to gain insights into application performance by tracing the requests through the various services that make up the application. This helps identify bottlenecks and latency within the application, providing a clear visual representation of how data flows through different components. AWS X-Ray can collect performance data and error rates, offering detailed information that facilitates efficient diagnosis of issues. By using X-Ray, developers can understand how long each service takes to respond and how those responses affect end-user experience. The other services listed do not directly provide capabilities for performance monitoring and diagnostics in the same way. Amazon EC2 is a compute service that provides the infrastructure for deploying applications but does not have built-in tools for detecting and diagnosing performance issues. AWS Lambda is a serverless computing service that executes code in response to events but is not specifically geared towards performance monitoring. Amazon S3 is an object storage service and, while it can store performance-related logs, it does not offer features for analyzing or diagnosing application performance issues.