OpenTelemetry Metrics provide a standardized and flexible way of collecting, aggregating, and exporting metric data from applications and services. They offer various types of metrics, including counters, gauges, histograms, and summaries, which can be used to track performance, errors, resource utilization, and other key aspects of system behavior. By instrumenting code with OpenTelemetry Metrics, developers can gain insight into the performance and behavior of their systems, enabling them to identify issues, optimize performance, and deliver a better user experience. The integration with Checkly provides an easy-to-use interface for monitoring metrics, allowing users to focus on building and delivering great software.