| Telecom operators process petabytes of distributed data daily, yet much of this potential remains buried under regulatory uncertainty and internal silos. Traditionally, the evolving European landscape, defined by GDPR, the Data Act, and the AI Act, has been viewed solely as a compliance hurdle. This paper argues the opposite: these regulations are actually the blueprint for a new era of sovereign and trusted data exchange. We introduce ReUse-Telco, a pragmatic framework designed to shift the industry from a "one-off" data usage mindset to ward a sustainable Circular Data Economy. The framework is built on three integrated pillars: privacy-preserving monetization, regulation-by design, and data circularity. Instead of treating information as a disposable byproduct of network operations, we propose the creation of "Data Products", managed, reusable assets that carry their own Data SLOs, semantic definitions, and embedded compliance metadata. Drawing from the operational objectives of EU-funded initiatives like DATAMITE and the workforce-reskilling focus of 3D-CIRCULAR, this research provides a comprehensive technical and governance roadmap. We detail actionable architecture patterns, including secure enclaves and Privacy-Enhancing Technologies (PETs), alongside a measurable KPI model for value capture and reuse readiness. By treating data as a circular resource that evolves through multiple lifecycles, operators can finally bridge the gap between strict legal compliance and sustainable commercial innovation. |
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