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To optimize paid acquisition budget across Meta, Google, and TikTok, you diagnose spend, ROAS, CAC, and payback at the channel level to classify channel states and output a 2-to-4-week scaling or pausing plan.

You should pause an underperforming ad channel using a 1/2/3-week negative-ROAS decision framework, which applies pause discipline based on evidence to prevent over-spending during prolonged waiting periods.

Attribution model reconciliation affects media buying by comparing last-click versus multi-touch and MMM data before pausing or scaling, ensuring channel-state diagnostics reflect true performance rather than single-touch bias.

Yes, you can use this for ecomm channel mix strategy across YouTube and native networks by applying concentration and incubation rules to allocate spend based on portfolio performance across all supported channels.

To plan a 2-to-4-week paid acquisition test schedule, you need structured pulls of spend, ROAS, CAC, and payback data from the last 90 days, optionally gathered via modern-mcp, to generate creative refresh actions and new audience tests.

The best way to diagnose diminishing returns in a paid media portfolio is to classify each channel's state—scaling well, at ceiling, declining, or negative—then prescribe matching budget actions for the next 2-to-4 weeks.