How Do We Decouple Our Producers From Our Consumers?

The idea of a service mesh came up five years ago, or maybe even four. It's easy to just add a service by d n s name and reference it by d n S name. But everybody got excited about east west communication and istio and doing all this stuff,. And so obviously the question is, well, how do we have an ivent mesh? The event mess anything is not almost like the octopaton.