Defne Strengthens Flagship CSR Product with Major Investment and AI Layer to Address Niche Operator Challenges

Major investment strengthens the flagship CSR platform with a powerful new AI Layer

Istanbul, Turkey, 26.03.2026

Defne Telekomünikasyon AŞ today announces a strategic investment to further enhance its Central Subscriber Repository (CSR), the company’s flagship high-performance subscriber data access solution. Driven by rapidly growing demand from operators worldwide, Defne is committing significant resources to evolve CSR into an even more powerful real-time decision platform by integrating an advanced AI layer.

The investment aims to solve specific niche problems that traditional Subscriber Data Management systems struggle with, including ultra-low latency decision making, intelligent real-time fraud and risk control, dynamic service orchestration, and faster go-to-market cycles for new value-added services.

Oğuz Haliloğlu, Founder and CEO of Defne, commented: “CSR has quickly become a game-changer for operators seeking speed and efficiency without replacing their existing core systems. With surging demand, we have decided to double down on this product. By adding a sophisticated AI layer, we are not only strengthening CSR technically but also empowering our customers to tackle complex, operator-specific challenges with intelligence and agility. This investment reflects our long-term commitment to innovation in the telecom sector.”

Erhan Ermişoğlu, Director of Product & Marketing at Defne, added: “The market feedback on CSR has been overwhelmingly positive, especially for its ability to deliver less than 1 millisecond-level subscriber profile access while dramatically reducing signaling load. The new AI capabilities will enable operators to implement intelligent, context-aware rules for fraud prevention, personalized services, and real-time network decisions, turning CSR into a true strategic enabler. We are excited to bring these enhancements to both existing and new customers across the Middle East, Eastern Europe, and beyond.”

Ercan Fincan, CTO of Defne, stated: “From a technology perspective, integrating AI into CSR opens up entirely new possibilities. Our team is focused on building a robust, scalable AI layer that works seamlessly with both legacy CAP/SIGTRAN interfaces and modern REST/5G architectures. This will allow operators to run automated decision engines directly at the subscriber data layer, all with minimal impact on core network performance. We are committed to delivering a future-proof solution that evolves with our customers’ needs.”

The enhanced CSR with AI is expected to be available for pilot deployments in the coming months. Defne continues to position the product as a complementary, low-risk layer that delivers immediate value while supporting operators on their journey toward 5G and beyond.

For more information or to schedule a demonstration, please contact Defne’s product team.