Jaeger is an open source distributed tracing system. Similar to Zipkin, it's been inspired by the Google Dapper paper and complies with OpenTracing. Jaeger is a younger open source project than Zipkin, but it's gained popularity quickly due to a larger number of supported languages for the client libraries and easy installation on Kubernetes. We've used Jaeger successfully with Istio, integrating application traces with Envoy on Kubernetes, and like its UI. With Jaeger joining CNCF, we anticipate a larger community engagement effort and deeper integration with other CNCF projects.