In this post, I'll walk through OpenTelemtry core concepts and how to integrate OpenTelemetry in a Go application. By the end, you'll have a reusable telemetry package that sets up logging, metrics, and tracing! I've also published the package, complete with tests and examples, on GitHub: https://github.com/lucavallin/gotel . Feel free to use it as a starting point for your own projects.