OpenTelemetry offers valuable insights into performance, behavior, dependencies, and usage patterns when integrated with an API Gateway. API Gateway can provide intricate visibility into the entire request lifecycle, encompassing latency, service dependencies, and error propagation. The distributed context propagation facilitates the seamless propagation of context information between client calls to API Gateway and downstream services, such as trace IDs and span IDs, thus ensuring accurate aggregation and correlation of telemetry data. Custom Instrumentation empowers users to tailor telemetry data capture to their specific use cases within the API Gateway, encompassing request rates, response times, error rates, and resource utilization metrics. Integrating OpenTelemetry with Monitoring and Analysis Tools allows for comprehensive visualization, querying, and analysis of telemetry data. This integration facilitates insights into system performance, anomaly detection, and the generation of dashboards and reports for monitoring and alerting for end-to-end transactions.