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Joel Studler

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Why is it so Hard to Run a 5G Core on Kubernetes—and What Needs to Change for 6GContainerDays Hamburg 20262026-09-02
Telco CNFs often stay boxy: vendors ship thousands-parameter Helm charts, bundle Kafka/databases per function, and demand root/privileged containers, which…
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It’s Always DNS: So Let’s Break It On PurposeContainerDays Hamburg 20262026-09-02
A cloud‑native DNS for a 5G core is built with PowerDNS + ExternalDNS and CoreDNS forwarders across Kubernetes clusters, using GitOps for automation and no…
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From YANG To YAML: How We Tamed the 5G Configuration BeastCloud Native Telco Day 20262026-03-23
Operator and vendor collaboration produces a working GitOps prototype that converts YANG-derived intent into Kubernetes resources and pushes config to a CNF. A…
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Dig Smart: Building a Reliable Cloud Native DNS for Modern NetworksOpen Source Summit Europe 20252025-08-25
Swisscom builds a geo‑redundant cloud‑native DNS for its 5G core using ExternalDNS → PowerDNS with CoreDNS forwarders, deploying one PowerDNS plus local DB per…
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Keynote: Cloud Native Evolution in Telec...KubeCon + CloudNativeCon Europe 20252025-04-01
Cloud-native becomes the operational backbone for telco 5G and 6G planning, citing 2.3 billion 5G subscriptions in 2024 and a shift from roughly 10%…
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Evolving GitOps: Harnessing Kubernetes Resource Model for 5G CoreCloudOpen at Open Source Summit Europe 20242024-09-16
Swisscom claims that shifting GitOps to a Kubernetes Resource Model enables intent-driven 5G core configs so operators check in only high-level intent while…
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Evolving GitOps: Harnessing Kubernetes Resource Model for 5G CoreOpen Source Summit Europe 20242024-09-16
Swisscom replaces checked-in low‑level configs with KRM-based intent resources, using Flux plus custom Kubernetes operators to dynamically assemble runtime…
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From Spreadsheets to "Everything as Code" — Joel Studler and Jéremy WeberContainerDays 20232023-09-11
Swisscom replaces scattered spreadsheets with a GitOps pipeline that stores LLD as code (Ansible inventory of IPs), pulls vendor artifacts into JFrog, and uses…
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