Troubleshooting complex enterprise applications involves challenges like tracing requests, identifying bottlenecks, and understanding cascading failures.Correlating signals like logs, traces, and metrics can provide insights into root causes of problems and reduce Mean Time to Resolution.Amazon OpenSearch Service and Managed Grafana offer solutions to analyze and visualize telemetry data at scale.Architecture involves microservices on Amazon EKS emitting telemetry data to the OpenTelemetry Collector for uniform collection.Separating observability signal data into OpenSearch Ingestion pipelines facilitates scalability and fault isolation.Prerequisites include configuring Amazon Managed Prometheus workspace, OpenSearch Service domains, and Grafana workspace.Setting up IAM policies, roles, and ingestion pipelines enables efficient data processing in OpenSearch Service.Deploying an OpenTelemetry demo application on EKS allows for monitoring telemetry data with Grafana and OpenSearch Service.Configuring the OpenTelemetry Collector for logs, traces, and metrics export to respective targets enhances data visualization and analysis.Creating correlations in Amazon Managed Grafana links logs, traces, and metrics for seamless analysis and insight extraction.