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This whitepaper sets out what a modern solution for IR.21 and IR.85 processing should look like. It argues that roaming agreement updates should move from a manual burden to a source of agility and commercial value. IR.21 and IR.85 changes affect multiple systems and teams. To automate them properly, providers need an end-to-end approach covering three stages: detect, assess, and deploy. Detection alone, such as through RAEX, is not enough. Operators also need automated impact assessment across network, OSS, BSS, and inventory systems, followed by controlled deployment with validation, audit, and rollback. CORTEX addresses this through Evolved Roaming. The approach relies on process decoupling, reusable automation components, integrated change management,