[starptech]

From a technical perspective, a tracing system like opentracing is essential. Jaeger is a very user-friendly and great standard to do it. I prefer it over Zipkin.

If you want to maintain an "index" you can use a service-discovery service like https://www.consul.io/ and build tools on it.

Here you can see an example how to manage it with hemera in the node.js world https://github.com/hemerajs/aither. We use a production-grade messaging system called https://nats.io as service-discovery and transport layer and have a very transparent and maintainable landscape of our services.