Istio is an open-source service mesh that uses Kubernetes to help connect, monitor, and secure microservices. It provides a flexible way to manage and monitor network traffic, but can be challenging to scale and analyze data. Istio uses Prometheus to report data from its service mesh, which can be difficult to process and visualize. To overcome these challenges, Istio's users can send their Prometheus metrics to New Relic, making it easier to find and fix issues when something goes wrong. By monitoring key metrics such as request rates, success rates, latency, error rates, and resource utilization, users can gain insights into the performance of their microservices architecture. Additionally, Istio provides a range of features for monitoring traffic routing and load balancing, as well as alerting and notification systems to help users stay on top of system health. By leveraging New Relic's Prometheus OpenMetrics Integration or Remote Write integration, users can simplify their data management and focus on innovation.