Amazon X-Ray traces user requests as they travel through your entire application. It aggregates the data generated by the individual services and resources that make up your application, providing you an end-to-end view of how your application is performing.

With Amazon X-Ray, you can glean insights into how your application is performing and discover root causes. With X-Ray’s tracing features, you can follow request paths to pinpoint where in your application and what is causing performance issues. X-Ray provides annotations so you can append metadata to traces, making it possible to tag and filter trace data so you can discover patterns and diagnose issues.

Amazon X-Ray helps you identify performance bottlenecks. X-Ray’s service maps let you see relationships between services and resources in your application in real time. You can easily detect where high latencies are occurring, visualize node and edge latency distribution for services, and then drill down into the specific services and paths impacting application performance.

Amazon X-Ray works with Amazon EC2, Amazon EC2 Container Service (Amazon ECS), Amazon Lambda, and Amazon Elastic Beanstalk. You can use X-Ray with applications written in Java, Node.js, and .NET that are deployed on these services. 

Amazon X-Ray works for both simple and complex applications, either in development or in production. You can analyze simple asynchronous event calls, three-tier web applications, or complex microservices applications consisting of thousands of services. With X-Ray, you can trace requests made to applications that span multiple Amazon Web Services accounts (Only accounts registered in regions within Mainland China), Amazon Web Services China regions and Availability Zones (Only supports availability zones in Mainland China).