# Tracing **[ULTIMATE]**> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/7903) in GitLab Ultimate 11.5.Tracing provides insight into the performance and health of a deployed application,tracking each function or microservice which handles a given request.This makes it easy tounderstand the end-to-end flow of a request, regardless of whether you are using a monolithic or distributed system.## Jaeger tracing[Jaeger](https://www.jaegertracing.io/) is an open source, end-to-end distributedtracing system used for monitoring and troubleshooting microservices-based distributedsystems.### Deploying JaegerTo learn more about deploying Jaeger, read the official[Getting Started documentation](https://www.jaegertracing.io/docs/latest/getting-started/).There is an easy to use [all-in-one Docker image](https://www.jaegertracing.io/docs/latest/getting-started/#AllinoneDockerimage),as well as deployment options for [Kubernetes](https://github.com/jaegertracing/jaeger-kubernetes)and [OpenShift](https://github.com/jaegertracing/jaeger-openshift).### Enabling JaegerGitLab provides an easy way to open the Jaeger UI from within your project:1.[Set up Jaeger](#deploying-jaeger) and configure your application using one of the[client libraries](https://www.jaegertracing.io/docs/latest/client-libraries/).1. Navigate to your project's **Settings > Operations** and provide the Jaeger URL.1. Click **Save changes** for the changes to take effect.1. You can now visit **Operations > Tracing** in your project's sidebar and GitLab will redirect you to the configured Jaeger URL.