This article discusses the importance of monitoring and telemetry in software development, specifically highlighting Azure Application Insights as a tool for collecting, recording, and transmitting data automatically for quick performance analysis. It guides readers through setting up and integrating Application Insights with their Go applications to track custom events, metrics, exceptions, and more, providing real-time analytics and insights into application performance and user behavior. The article also provides a sample project repository and devcontainer configuration to facilitate easy setup and development consistency.