• Basics of marketing

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The Great Attribution Fracture Marketing measurement is entering an architectural reset. Cross-site signals have weakened, consent requirements have narrowed observable journeys, and browser protections have made the old promise of a complete user path increasingly difficult to defend. Apple’s App Tracking Transparency framework, shorter storage windows, partitioned cookies, and platform-controlled reporting have all contributed to the same outcome: a growing portion of the customer journey is either invisible, fragmented, or available only inside a walled garden. That disruption has created a misleading choice between two familiar systems. This Client Challenge often frames multi-touch attribution as the user-level detail solution, while marketing mix modeling offers aggregate resilience. One behaves like a microscope, the other like a telescope. Neither, however, should be treated as