Do you need a service mesh in your Kubernetes cluster? Whether you say you do or say you don't, do you know why that's the case? A mesh of what? How does it work? How do you connect your apps to it and what does that allow you to do? Rather than look at or compare specific meshes, we'll start with the simplest possible example of what a service mesh is and does, and then look at a conceptual level at some of the things building on that allows *you* to do.