In part one of the OpenTracing blog series we provided a good OpenTracing overview, explaining what OpenTracing is and does, how it works and what it aims to achieve. One of the key aspects of OpenTracing is that it is vendor neutral, and also that OpenTracing is just a specification. In order to instrument an application via OpenTracing API, it’s necessary to have an OpenTracing-compatible tracer correctly deployed and listening for incoming span requests.