One of the OpenTelemetry Project’s many Special Interest Groups (SIG) is the OpenTelemetry Community demo SIG. The SIG supports a set of instrumented microservices and a front-end web app which are used to show how to instrument a distributed system with OpenTelemetry. The main focus of the web app is to demonstrate how to instrument an application, no matter what programming language, platform or OS it uses. The web app also shows different instrumentation techniques: automatic and manual, metrics, and baggage.
Source: Front-end Overhaul of the OpenTelemetry Demo (Go to Next.js)