Microservices are great, no doubt about that. But, when it comes to troubleshooting issues in a distributed system, it’s rarely easy. Getting multiple independent teams to agree to use a standard set of metrics or debugging strategies, makes it even harder. Issues turn into a blame game where DNS, Kubernetes, the network, or the mesh all take turns. Linkerd, the CNCF's recently graduated service mesh, has a built-in ability to tap into and analyze traffic to quickly identify and isolate problems. To do that, no code changes are required, nor do app teams need to expose their own metrics or become experts in Kubernetes or the mesh. When a problem occurs, Linkerd users can rely on the mesh as a single source of truth to help quickly identify issues and drive down MTTR.