The text discusses the integration of PM2 (Process Manager 2) with New Relic's Flex platform to monitor Node.js applications running under PM2. The process manager provides robust features, including automatic application restarts and monitoring capabilities, making it an essential tool for managing production-grade Node.js environments. The PM2 API offers detailed telemetry data, which can be invaluable when troubleshooting performance issues. The integration with New Relic's Flex platform allows capturing insights from PM2, such as resource consumption, CPU and memory usage, process-level details, debug pointers, version control, and deployment information. A configuration file is provided to capture these metrics, using a combination of commands and JSON transformation with JQ. Once the configuration is ready, it can be validated with Flex's debug mode and then integrated into New Relic's platform for visualization and analysis. The integration enhances visibility into application performance, simplifies root-cause analysis, and enables proactive monitoring.