Observability with Context: Telemetry, Time, Tracing, and Topology

What changed? That’s the question ops personnel have been asking for decades whenever something goes wrong in the production IT environment. To figure out what caused an incident – and to have any idea how to fix it – we must know what changed. There’s just one problem with this approach. What if everything is subject to change, all the time? Instead, we must look at the big picture – how everything fits together, the context for such events.