ECLASS

During the 2026 Carnival season, the Telekom mobile network in the strongholds of Cologne, Düsseldorf, Bonn, Mainz, and Aachen recorded a new data peak of 2 million gigabytes — an increase of more than 30 percent. Cologne clearly topped the city ranking. The mobile data shows strong visitor flows into Cologne, high 5G usage, and noticeable demographic differences depending on the carnival hotspot. The AI-powered RAN Guardian Agent optimized the network during more than 130 major events. Instagram was the most popular app. Additionally, anonymized Motion Data analyses support planning and safety at large-scale events.

When our CMS became the target of a large-scale DDoS attack, it triggered a real-world stress test of our cloud infrastructure. From saturated load balancers and 100% CPU utilization to emergency mitigation measures, this incident challenged our resilience. By rapidly implementing AWS CloudFront, AWS WAF, and a secure edge-based protection model, we successfully stabilized the system and prevented further disruption. A follow-up attack confirmed the effectiveness of the new architecture, demonstrating how proactive security design and strong collaboration ensure service continuity and long-term resilience.

The article explores how T‑Systems’ Motion Data leverages anonymized mobile network information to reveal real‑world fan behavior in the 2024/25 Bundesliga season. It highlights how supporters travel to home and away matches, the demographic composition of stadium audiences, and which clubs attract the largest crowds—including surprising cross‑border dynamics. By transforming assumptions into measurable insights, Motion Data enables clubs, cities, and event organizers to improve mobility planning, enhance stadium operations, and design more targeted fan engagement strategies.