Kaj Kjellgren
Kaj Kjellgren is a Senior Peering Consultant at DE-CIX, focusing on global peering and interconnection, particularly in the Nordic market.
He has more than 25 years of experience in Internet infrastructure, network architecture and interconnection. Before joining DE-CIX, Kaj spent more than two decades at Netnod, most recently as Technical Ambassador, and previously served as Technical Director for Sweden and Denmark at KPNQwest.
Kaj is a frequent speaker, moderator and panellist within the international peering community. His work focuses on how interconnection, network architecture and resilience must evolve to support new technologies and changing traffic patterns.
Sessions
AI networking discussions often stop at the GPU cluster. But a single inference task may increasingly cross devices, agents, models, tools, data sources, networks and providers—turning one user interaction into a dynamic distributed execution graph.
This talk explores what that could mean for network architecture and interconnection. It examines how latency, compute availability, policy and state may influence where parts of a task execute, and why explaining performance becomes difficult across organisational boundaries.
It maps existing observability building blocks and introduces FOX, a deliberately exploratory model for exchanging selected, policy-controlled evidence. The talk concludes by connecting observability with security and resilience, including agentic amplification, inference exhaustion, hidden dependencies and stateful failover.
Geopolitical events are already shaping how operators buy, build, and run networks — including how much they can still rely on subsea cables between the Nordics and Central Europe. This panel looks at where that pressure hits Nordic and Baltic digital infrastructure hardest, how operators mitigate it, and what role Internet Exchanges play when the political map is moving. Moderated by Theo Voss, it brings together Kārlis Svilans (CERT.LV), Kamil Szczepański (Orange Polska), Aleksi Suhonen (TREX), Kaj Kjellgren (DE-CIX), and Fredrik Korsback (Meta). The conversation will stay practical: operational resilience, interconnection, and what the community should prepare for next.