How can Envoy enhance monitoring of APIs?

Envoy enhances the monitoring of APIs primarily by providing rich metrics and tracing information. This capability is crucial for understanding the performance and behavior of APIs under different conditions. Metrics can include details such as request counts, latencies, response sizes, and error rates. By collecting and exposing this information, Envoy allows developers and operators to monitor their systems in real-time, identify bottlenecks, and troubleshoot issues effectively.

Additionally, Envoy's integration with various tracing systems supports distributed tracing, which helps in tracking the flow of requests through microservices. This feature is vital for analyzing how different components interact and for pinpointing any inefficiencies or failures in the API ecosystem.

The other options, while they may contribute to API management in some way, do not directly enhance monitoring. For example, limiting access to observability data could hinder monitoring capabilities rather than expand them. Enforcing strict data schemas is pertinent to data integrity and validation but does not directly enhance the observation of API performance. Aggregating error logs is useful for identifying issues but does not provide the comprehensive metrics and tracing context that Envoy offers. Therefore, the option that clearly aligns with expanding monitoring capabilities is the provision of rich metrics and tracing information.