How does Envoy support metrics collection?

Envoy supports metrics collection by actively gathering data on various operational aspects and exposing this data to monitoring systems. This functionality is crucial for observing the performance of services, understanding traffic patterns, and ensuring the reliability of the services being managed by Envoy.

Metrics collected by Envoy include information on requests, latencies, error rates, and other significant operational metrics. This data can then be easily integrated with monitoring solutions, allowing teams to visualize, analyze, and react to changes in the system's behavior. By providing such detailed and accessible metrics, Envoy empowers organizations to maintain visibility over their microservices and address issues proactively, enhancing overall system stability and performance.

The focus on actively collecting and exposing metrics stands in contrast to the other options, which do not represent how Envoy operates regarding metrics collection and monitoring. Ignoring operational metrics, relying solely on user-generated reports, or limiting metrics to just success rates would severely hinder effective monitoring and troubleshooting, which emphasizes the value and correctness of the selected answer.