The blog post outlines the process of capturing Spring Boot metrics using the OpenTelemetry Java Instrumentation Agent. Initially, it describes setting up a simple REST service application, enabling Prometheus metrics via Spring Boot's Actuator and Micrometer, and exposing them through a Prometheus endpoint. The article then introduces the OpenTelemetry collector, which processes and exports telemetry data, demonstrating how to configure it to handle metrics in Prometheus format. Subsequently, it details transitioning from Prometheus to OpenTelemetry metrics by modifying the collector's configuration and employing the OpenTelemetry Java Instrumentation Agent. The post explains the necessity of bridging Micrometer metrics with OpenTelemetry by registering the OpenTelemetryMeterRegistry as a Spring bean to ensure compatibility and completeness of metrics. The guide concludes by emphasizing the seamless integration of Spring Boot metrics with the OpenTelemetry setup and the benefits of using Grafana Cloud for comprehensive monitoring solutions.