"The New Relic Flex integration is a powerful tool for IT practitioners to collect and display critical metrics from various sources, including custom scripts. The integration allows users to create YAML files that define the command to run, the output format, and other settings. To troubleshoot issues, users can run the New Relic Flex utility manually or set up logging options to get more detailed error messages. Once the data is collected, users can use NRQL queries to display the data in a meaningful way, including creating custom charts and dashboards. The script behind the scenes uses Python to interact with external commands, such as speedtest, and extracts relevant data from the output. With this integration, IT practitioners can get the data they need to monitor their systems and applications more effectively."