How Bad Data Corrupts AI Bidding and CAC Performance

Up to 60% of paid clicks provide zero conversion value. Chester Scott, Chief Strategy Officer at Lunio, explains why clicks and ROAS both distort performance measurement and how they corrupt AI bidding decisions. The conversation covers the shift from ROAS to marginal ROAS as a North Star metric, isolating diminishing returns across channels, platforms, and audiences, and protecting automated bidding models from compromised leading indicators that inflate CAC.

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