This blog post discusses how to add OpenTelemetry instrumentation to Java or .NET applications on Kubernetes and combine them with Consul service mesh metrics and traces for use with Prometheus and Jaeger. It covers the setup of end-to-end tracing, enabling service mesh proxy and application metrics, configuring Consul service mesh to track Envoy traces as Zipkin spans, and more. The post also emphasizes the importance of using consistent metrics and tracing formats when building instrumentation in applications.