Rust applications face challenges such as latency spikes and resource contention in production environments, making monitoring essential to ensure performance expectations are met and reliability under load is maintained. To address this information gap, Datadog provides instructions on how to instrument a Rust application with OpenTelemetry (OTel) and send its collected telemetry data to Datadog. The guide covers preparing the application for telemetry data collection, capturing metrics, traces, and logs, and configuring OTel at startup. It also shows how to use OTel instrumentation to measure processing time, log messages, and instrument HTTP requests with traces, enabling valuable insights into performance and quickly identifying issues. By following this guide, developers can leverage OpenTelemetry and Datadog to monitor their Rust applications, gain a deeper understanding of system behavior, and optimize performance.