HN823: Defining A Modern Network Service

In this episode of Heavy Networking, host Ethan Banks sits down with Mark Prosser, network operator advocate and founder of Tornog, a Toronto-based network operators group, to explore the evolving definition of a 'network service' in the modern era. The conversation centers on how the complexity of today’s networks—driven by overlays, cloud integration, outsourced infrastructure, and AI—has made traditional service provisioning inadequate. Mark argues that a true network service must be end-to-end, validated across all layers, and understood holistically across organizational boundaries. He emphasizes that service delivery is no longer just about configuration but about business outcomes, compliance, and continuous validation. The discussion highlights the growing disconnect between technical teams, the rise of silos, and the need for sociotechnical systems thinking. Ethan and Mark also explore the challenges of testing in dynamic environments, the limitations of tribal knowledge, and the potential of AI and tools like NUTS and PyATS to bridge gaps in documentation and observability. The episode concludes with a call to action: organizations must start small, document services iteratively, and prioritize collaboration to deliver resilient, measurable network services in an age of relentless complexity. Key takeaways include: 1) A network service must be defined by its end-to-end impact on business outcomes, not just technical configuration; 2) Continuous validation and testing—beyond initial deployment—are essential due to dynamic network conditions; 3) Organizational silos hinder service delivery, and teams must adopt systems-level thinking and cross-functional collaboration; 4) Tools like NUTS and PyATS can help automate testing, but the real challenge is cultural and process-oriented; 5) AI can assist in generating documentation and translating technical jargon across teams, reducing friction; 6) Start small—focus on the 20% of testing that delivers 80% of value—and iterate; 7) The network is no longer a monolithic entity but a collection of interdependent services requiring shared ownership; 8) Human insight remains irreplaceable, even as automation and AI advance.