Monitoring a Flask Application with SigNoz and OpenTelemetry: A Step-by-Step Guide Introduction Building a web application is only the first step in software development. Once an application is deployed, understanding how it performs under real-world conditions becomes equally important. Developers need to know how quickly requests are processed, which endpoints are failing, and where latency is being introduced. While application logs provide useful information, they often lack the context needed to trace requests across different components. This is where observability becomes valuable. Observability combines metrics, logs, and distributed traces to provide a comprehensive view of an application's health and performance. Instead of guessing why an application is slow or unreliable, developers can identify bottlenecks using real telemetry data. In this tutorial, you'll learn how to monitor a Flask application using OpenTelemetry and SigNoz . We'll set up a simple Flask ...