This blog post introduces OpenTelemetry, an observability framework that provides a unified approach to capturing distributed traces and metrics from cloud-native software applications. It highlights the benefits of using OpenTelemetry, including debugging, performance tuning, and optimization, as well as its ability to provide insights into how data moves through systems and where bottlenecks arise. The post also demonstrates how to deploy OpenTelemetry with Java Spring Boot application using a 1-click setup, Lumigo distro for Java, and Docker, without requiring any changes to the Java codebase. The deployment process involves setting up prerequisites such as Apache Maven, Docker, and Java 18, then building and running a containerized version of the application, followed by integrating OpenTelemetry with the Lumigo distro using a 1-click setup. This enables developers to capture distributed traces and metrics from their applications without requiring any code changes, providing valuable insights into how software behaves and interacts in different environments.