Which tools should be used to generate reports for network latency across multiple cloud providers?

Using the Zipkin collector alongside Stackdriver Trace to gather and report data is a suitable choice for generating reports on network latency across multiple cloud providers. Zipkin is a distributed tracing system that helps gather timing data from services and can provide insights into latency issues by visualizing how requests propagate through various microservices. This combination works effectively because Zipkin collects fine-grained timings, while Stackdriver Trace can visualize the collected trace data in a unified manner, allowing for easier analysis and reporting on performance across different environments.

This method is particularly valuable as it allows you to trace the flow of requests across different cloud services, making it easier to pinpoint specific sources of latency that may arise from inter-cloud communication or service dependencies. Additionally, Stackdriver Trace integrates well with other Google Cloud services, providing a powerful toolset for monitoring distributed applications.

Other options, while they have their merits in other contexts, do not focus on both the collection and reporting of latency specifically across multiple cloud providers as effectively as the combination of Zipkin and Stackdriver Trace in this case.