Using short-term data can lead to premature optimizations or paused campaigns that would have converted later, wasting ad spend and undermining long-term ROI. Adopting a longer evaluation window improves decision-making and more accurately measures campaign effectiveness.
Advertisers often make the mistake of judging ad performance based on short-term results, such as the first few days after launch or brief dips in performance. For purchase-focused campaigns, the speaker stresses that conversions can occur up to seven days after a click and typically require multiple impressions or interactions. The recommended approach is to evaluate results using a seven-day attribution window and to assess ad sets at least two weeks in, rather than reacting to day-to-day fluctuations. Ignoring immediate results and allowing campaigns time to accumulate data yields more reliable performance insights.
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